Gaskets for All Industries
Hygienic seals are used widely in virtually all sanitary applications to seal clamp connections in sanitary pipe lines.
Central States Industrial (CSI) stocks a wide variety of sanitary gaskets from Rubber Fab and Newman Gasket Company. We offer standard and specialty gaskets in several elastomers and fluoroelastomers. Our sanitary gaskets are compliant with FDA, USDA, and 3-A criteria. USP Class VI compliant gaskets are also available.
For more information about gaskets and how to choose the right one for your application, contact CSI today.
Clamp Type I Gaskets
CSI stocks sanitary Tri-Clamp® gaskets that are Animal Derived Ingredient (ADI) free. Buna-N gaskets are not USP Class VI and are not ADI free.

| Size (in) | Buna-N | EPDM | FKM/Viton | Silicone | PTFE | Tuf-Steel | Flexi-Steel |
|---|---|---|---|---|---|---|---|
| ½ | 42MP-U-0.5 | 42MP-E-0.5 | 42MP-SFY-0.5 | 42MP-PX-0.5 | 42MP-G-0.5 | 42MP-GTS-0.5 | 42MP-TUF-0.5 |
| ¾ | 42MP-U-0.75 | 42MP-E-0.75 | 42MP-SFY-0.75 | 42MP-PX-0.75 | 42MP-G-0.75 | 42MP-GTS-0.75 | 42MP-TUF-0.75 |
| 1 | 40MP-U-1 | 40MP-E-1 | 40MP-SFY-1 | 40MP-PX-1 | 40MP-G-1 | 40MP-GTS-1 | 40MP-TUF-1 |
| 1½ | 40MP-U-1.5 | 40MP-E-1.5 | 40MP-SFY-1.5 | 40MP-PX-1.5 | 40MP-G-1.5 | 40MP-GTS-1.5 | 40MP-TUF-1.5 |
| 2 | 40MP-U-2 | 40MP-E-2 | 40MP-SFY-2 | 40MP-PX-2 | 40MP-G-2 | 40MP-GTS-2 | 40MP-TUF-2 |
| 2½ | 40MP-U-2.5 | 40MP-E-2.5 | 40MP-SFY-2.5 | 40MP-PX-2.5 | 40MP-G-2.5 | 40MP-GTS-2.5 | 40MP-TUF-2.5 |
| 3 | 40MP-U-3 | 40MP-E-3 | 40MP-SFY-3 | 40MP-PX-3 | 40MP-G-3 | 40MP-GTS-3 | 40MP-TUF-3 |
| 4 | 40MP-U-4 | 40MP-E-4 | 40MP-SFY-4 | 40MP-PX-4 | 40MP-G-4 | 40MP-GTS-4 | 40MP-TUF-4 |
| 5 | 40MO-U-5 | 40MO-E-5 | 40MO-SFY-5 | 40MO-PX-5 | 40MO-G-5 | 40MO-GTS-5 | 40MP-TUF-5 |
| 6 | 40MO-U-6 | 40MO-E-6 | 40MO-SFY-6 | 40MO-PX-6 | 40MO-G-6 | 40MO-GTS-6 | 40MP-TUF-6 |
| 8 | 40MO-U-8 | 40MO-E-8 | 40MO-SFY-8 | 40MO-PX-8 | 40MO-G-8 | 40MO-GTS-8 | 40MP-TUF-8 |
| 10 | 40MO-U-10 | 40MO-E-10 | 40MO-SFY-10 | 40MO-PX-10 | 40MO-G-10 | 40MO-GTS-10 | 40MP-TUF-10 |
| 12 | 40MO-U-12 | 40MO-E-12 | 40MO-SFY-12 | 40MO-PX-12 | 40MO-G-12 | 40MO-GTS-12 | 40MP-TUF-12 |
Flanged Type II Gaskets
Sanitary Clamp Type II Flanged Gaskets are manufactured with flanges to aid in installation. The flanged outer edge fits over the outer ferrule connection.

Envelope Type III Gaskets
Sanitary clamp gaskets with a PTFE outer shell with EPDM or viton inserts. Tuf-flex, a registered trademark from Rubberfab, is also offered as an envelope gasket.
| Clamp Gasket | Clamp Gasket Tuf-Flex | Clamp Gasket UniFlex | |||
|---|---|---|---|---|---|
| Size (in) | EPDM Insert | FKM/Viton Insert | EPDM Insert | FKM/Viton Insert | EPDM Insert |
| ½ | A42MP-GR-E-0.5 | A42MP-GR-SFY-0.5 | A42MP-GR-TF-E-0.5 | A42MP-GR-TF-SFY-0.5 | A42MP-GR-TUF-E-0.5 |
| ¾ | A42MP-GR-E-0.75 | A42MP-GR-SFY-0.75 | A42MP-GR-TF-E-0.75 | A42MP-GR-TF-SFY-0.75 | A42MP-GR-TUF-E-0.75 |
| 1 | A40MP-GR-E-1 | A40MP-GR-SFY-1 | A40MP-GR-TF-E-1 | A40MP-GR-TF-SFY-1 | A40MP-GR-TUF-E-1 |
| 1½ | A40MP-GR-E-1.5 | A40MP-GR-SFY-1.5 | A40MP-GR-TF-E-1.5 | A40MP-GR-TF-SFY-1.5 | A40MP-GR-TUF-E-1.5 |
| 2 | A40MP-GR-E-2 | A40MP-GR-SFY-2 | A40MP-GR-TF-E-2 | A40MP-GR-TF-SFY-2 | A40MP-GR-TUF-E-2 |
| 2½ | A40MP-GR-E-2.5 | A40MP-GR-SFY-2.5 | A40MP-GR-TF-E-2.5 | A40MP-GR-TF-SFY-2.5 | A40MP-GR-TUF-E-2.5 |
| 3 | A40MP-GR-E-3 | A40MP-GR-SFY-3 | A40MP-GR-TF-E-3 | A40MP-GR-TF-SFY-3 | A40MP-GR-TUF-E-3 |
| 4 | A40MP-GR-E-4 | A40MP-GR-SFY-4 | A40MP-GR-TF-E-4 | A40MP-GR-TF-SFY-4 | A40MP-GR-TUF-E-4 |
| 5 | A40MO-GR-E-5 | A40MO-GR-SFY-5 | |||
| 6 | A40MO-GR-E-6 | A40MO-GR-SFY-6 | A40MO-GR-TF-E-6 | A40MO-GR-TF-SFY-6 | A40MO-GR-TUF-E-6 |
| 8 | A40MO-GR-E-8 | A40MO-GR-SFY-8 | A40MO-GR-TF-E-8 | A40MO-GR-TF-SFY-8 | |
| 10 | A40MO-GR-E-10 | A40MO-GR-SFY-10 | A40MO-GR-TF-E-10 | A40MO-GR-TF-SFY-10 | |
| 12 | A40MO-GR-E-12 | A40MO-GR-SFY-12 | A40MO-GR-TF-E-12 | A40MO-GR-TF-SFY-12 | |
| Flanged Gasket | ||
|---|---|---|
| Size (in) | EPDM Insert | FKM/Viton Insert |
| 1 | A40MPF-GR-E-1 | A40MPF-GR-SFY-1 |
| 1½ | A40MPF-GR-E-1.5 | A40MPF-GR-SFY-1.5 |
| 2 | A40MPF-GR-E-2 | A40MPF-GR-SFY-2 |
| 2½ | A40MPF-GR-E-2.5 | A40MPF-GR-SFY-2.5 |
| 3 | A40MPF-GR-E-3 | A40MPF-GR-SFY-3 |
| 4 | A40MPF-GR-E-4 | A40MPF-GR-SFY-4 |
| 6 | A40MOF-GR-E-6 | A40MOF-GR-SFY-6 |
| 8 | A40MOF-GR-E-8 | A40MOF-GR-SFY-8 |
Metal Detectable X-Rayable Gaskets
Other available colors: Black (1), Green (2), Gray (3), Yellow (4), Red (5), Purple (6), Pink (7).
10" and 12" availabe as flanged gaskets only.
Tuf-steel is a Rubberfab Trademark.
150# and 300# Flange Ring Gaskets

- Gaskets suitable for service with ANSI 150# and 300# rated flanged connections
- Dimensions per ANSI B16.5 standard for pipe flanges and gaskets
- Thickness 1/16" (0.0625") and 3/8" (0.125")
| Size (in) | Buna | EPDM | FKM/Viton | Silicone | PTFE | A 150# OD (in) | B 150# ID (in) | A 300# OD (in) | B 300# ID (in) |
|---|---|---|---|---|---|---|---|---|---|
| ½ | 42RG-U-0.5-150-0.125 | 42RG-E-0.5-150-0.125 | 42RG-SFY-0.5-150-0.125 | 42RG-PX-0.5-150-0.125 | 42RG-G-0.5-150-0.125 | 1.88 | 0.84 | 2.13 | 0.84 |
| ¾ | 42RG-U-0.75-150-0.125 | 42RG-E-0.75-150-0.125 | 42RG-SFY-0.75-150-0.125 | 42RG-PX-0.75-150-0.125 | 42RG-G-0.75-150-0.125 | 2.25 | 1.06 | 2.63 | 1.06 |
| 1 | 40RG-U-1-150-0.125 | 40RG-E-1-150-0.125 | 40RG-SFY-1-150-0.125 | 40RG-PX-1-150-0.125 | 40RG-G-1-150-0.125 | 2.63 | 2.63 | 2.88 | 2.63 |
| 1½ | 40RG-U-1.5-150-0.125 | 40RG-E-1.5-150-0.125 | 40RG-SFY-1.5-150-0.125 | 40RG-PX-1.5-150-0.125 | 40RG-G-1.5-150-0.125 | 3.38 | 3.38 | 3.75 | 3.38 |
| 2 | 40RG-U-2-150-0.125 | 40RG-E-2-150-0.125 | 40RG-SFY-2-150-0.125 | 40RG-PX-2-150-0.125 | 40RG-G-2-150-0.125 | 4.13 | 2.38 | 4.38 | 2.38 |
| 2½ | 40RG-U-2.5-150-0.125 | 40RG-E-2.5-150-0.125 | 40RG-SFY-2.5-150-0.125 | 40RG-PX-2.5-150-0.125 | 40RG-G-2.5-150-0.125 | 4.88 | 2.88 | 5.13 | 2.88 |
| 3 | 40RG-U-3-150-0.125 | 40RG-E-3-150-0.125 | 40RG-SFY-3-150-0.125 | 40RG-PX-3-150-0.125 | 40RG-G-3-150-0.125 | 5.38 | 3.50 | 5.88 | 3.50 |
| 4 | 40RG-U-4-150-0.125 | 40RG-E-4-150-0.125 | 40RG-SFY-4-150-0.125 | 40RG-PX-4-150-0.125 | 40RG-G-4-150-0.125 | 6.88 | 4.50 | 7.13 | 4.50 |
| 6 | 40RG-U-6-150-0.125 | 40RG-E-6-150-0.125 | 40RG-SFY-6-150-0.125 | 40RG-PX-6-150-0.125 | 40RG-G-6-150-0.125 | 8.75 | 6.63 | 9.88 | 6.63 |
| 8 | 40RG-U-8-150-0.125 | 40RG-E-8-150-0.125 | 40RG-SFY-8-150-0.125 | 40RG-PX-8-150-0.125 | 40RG-G-8-150-0.125 | 11.00 | 8.63 | 12.13 | 8.63 |
Screen Gaskets
Screen gaskets are used for filtration and removing small particles. Offered in stainless steel, hastelloy, and cloth options, sanitary Tri-Clamp gaskets are available in the USP Class VI elastomer of your choice in a variety of mesh sizes.
- Available in ½ – 6 inch
- 4 - 325 mesh size
- EPDM, FKM (Viton), silicone, PTFE (Teflon), Tuf-Steel®, Buna (FDA compliant only)
- Also available in Detectomer® metal detectable/x-rayable, sock screens, and camlock.
| Size (in) | Buna | EPDM | FKM (Viton) | Silicone | PTFE (Teflon) |
|---|---|---|---|---|---|
| ½ | 42MPS-U-0.5-XM | 42MPS-E-0.5-XM | 42MPS-SFY-0.5-XM | 42MPS-PX-0.5-XM | 42MPS-G-0.5-XM |
| ¾ | 42MPS-U-0.75-XM | 42MPS-E-0.75-XM | 42MPS-SFY-0.75-XM | 42MPS-PX-0.75-XM | 42MPS-G-0.75-XM |
| 1 | 40MPS-U-1-XM | 40MPS-E-1-XM | 40MPS-SFY-1-XM | 40MPS-PX-1-XM | 40MPS-G-1-XM |
| 1½ | 40MPS-U-1.5-XM | 40MPS-E-1.5-XM | 40MPS-SFY-1.5-XM | 40MPS-PX-1.5-XM | 40MPS-G-1.5-XM |
| 2 | 40MPS-U-2-XM | 40MPS-E-2-XM | 40MPS-SFY-2-XM | 40MPS-PX-2-XM | 40MPS-G-2-XM |
| 2½ | 40MPS-U-2.5-XM | 40MPS-E-2.5-XM | 40MPS-SFY-2.5-XM | 40MPS-PX-2.5-XM | 40MPS-G-2.5-XM |
| 3 | 40MPS-U-3-XM | 40MPS-E-3-XM | 40MPS-SFY-3-XM | 40MPS-PX-3-XM | 40MPS-G-3-XM |
| 4 | 40MPS-U-4-XM | 40MPS-E-4-XM | 40MPS-SFY-4-XM | 40MPS-PX-4-XM | 40MPS-G-4-XM |
| 6 | 40MOS-U-6-XM | 40MOS-E-6-XM | 40MOS-SFY-6-XM | 40MOS-PX-6-XM | 40MOS-G-6-XM |
XM = Mesh Size.
Mesh Sizes:
1/2" and 3/4" gasket = 10M, 12M, 14M, 16M, 18M, 20M, 25M, 30M, 40M, 50M, 60M, 80M,100M.
1"-4" gasket = 4M, 6M, 8M, 10M, 12M, 14M, 16M, 18M, 20M, 25M, 30M, 40M, 50M, 60M, 80M, 100M.
Sock Screen Gaskets
Sock screen gaskets provide filtration by removing particles and other suspended solids from fluids. One application are in-line filters or strainers for protecting pumps and other process equipment. These gaskets meet FDA, USP Class VI criteria, FDA Title 21 CFR 177 .2600, FDA Title 21 CFR 177 .1550, Current Good Manufacturing Practices (CGMP), ASME, Animal Derived Ingredient Free (ADI), FDA Compliant Mold Release. Buna-N is FDA only.
| Size (in) | Buna | EPDM | FKM/Viton | Silicone | Teflon |
|---|---|---|---|---|---|
| 1 | 40MPSS-U-1-XM-OAL | 40MPSS-E-1-XM-OAL | 40MPSS-SFY-1-XM-OAL | 40MPSS-PX-1-XM-OAL | 40MPSS-G-1-XM-OAL |
| 1½ | 40MPSS-U-1.5-XM-OAL | 40MPSS-E-1.5-XM-OAL | 40MPSS-SFY-1.5-XM-OAL | 40MPSS-PX-1.5-XM-OAL | 40MPSS-G-1.5-XM-OAL |
| 2 | 40MPSS-U-2-XM-OAL | 40MPSS-E-2-XM-OAL | 40MPSS-SFY-2-XM-OAL | 40MPSS-PX-2-XM-OAL | 40MPSS-G-2-XM-OAL |
| 2½ | 40MPSS-U-2.5-XM-OAL | 40MPSS-E-2.5-XM-OAL | 40MPSS-SFY-2.5-XM-OAL | 40MPSS-PX-2.5-XM-OAL | 40MPSS-G-2.5-XM-OAL |
| 3 | 40MPSS-U-3-XM-OAL | 40MPSS-E-3-XM-OAL | 40MPSS-SFY-3-XM-OAL | 40MPSS-PX-3-XM-OAL | 40MPSS-G-3-XM-OAL |
| 4 | 40MPSS-U-4-XM-OAL | 40MPSS-E-4-XM-OAL | 40MPSS-SFY-4-XM-OAL | 40MPSS-PX-4-XM-OAL | 40MPSS-G-4-XM-OAL |
| 6 | 40MOSS-U-6-XM-OAL | 40MOSS-E-6-XM-OAL | 40MOSS-SFY-6-XM-OAL | 40MOSS-PX-6-XM-OAL | 40MOSS-G-6-XM-OAL |
XM = Mesh Size.
Mesh Sizes: 10M, 16M, 20M, 30M, 40M, 50M, 60M, 80M, 100M, 120M, 200M, and 325M.
OAL = Overall Length: 0.75", 1.5", and 6".
Perforated Gaskets
Perforated gaskets are used for in-line filtration to remove particles from process lines. Standard perforation plate size is 0.033".
| Size (in) | Buna | EPDM | FKM/Viton | Silicone | PTFE/Teflon | Teflon Steel |
|---|---|---|---|---|---|---|
| 1 | 40MPP-U-1-.033 | 40MPP-E-1-.033 | 40MPP-SFY-1-.033 | 40MPP-PX-1-.033 | 40MPP-G-1-.033 | 40MPP-TS-1-.033 |
| 1½ | 40MPP-U-1.5-.033 | 40MPP-E-1.5-.033 | 40MPP-SFY-1.5-.033 | 40MPP-PX-1.5-.033 | 40MPP-G-1.5-.033 | 40MPP-TS-1.5-.033 |
| 2 | 40MPP-U-2-.033 | 40MPP-E-2-.033 | 40MPP-SFY-2-.033 | 40MPP-PX-2-.033 | 40MPP-G-2-.033 | 40MPP-TS-2-.033 |
| 2½ | 40MPP-U-2.5-.033 | 40MPP-E-2.5-.033 | 40MPP-SFY-2.5-.033 | 40MPP-PX-2.5-.033 | 40MPP-G-2.5-.033 | 40MPP-TS-2.5-.033 |
| 3 | 40MPP-U-3-.033 | 40MPP-E-3-.033 | 40MPP-SFY-3-.033 | 40MPP-PX-3-.033 | 40MPP-G-3-.033 | 40MPP-TS-3-.033 |
| 4 | 40MPP-U-4-.033 | 40MPP-E-4-.033 | 40MPP-SFY-4-.033 | 40MPP-PX-4-.033 | 40MPP-G-4-.033 | 40MPP-TS-4-.033 |
| 6 | 40MOP-U-6-.033 | 40MOP-E-6-.033 | 40MOP-SFY-6-.033 | 40MOP-PX-6-.033 | 40MOP-G-6-.033 | 40MOP-TS-6-.033 |
Additional Perforation Plate Sizes Available: .045", .062", .094", .125", .187", .250", .375", .500"
Orifice Plate Gaskets
Orifice Plate Gaskets offer solutions for equalizing and balancing backflow pressure as well as flow rates. They are interchangeable with standard sanitary clamp gaskets. Available as blank, concentric, eccentric, and non-metallic. Holes drilled to specifications. Also offered as Teflon and Teflon steel non-metallic/solid.
| Size (in) | Buna | EPDM | FKM/Viton | Silicone | PTFE/Teflon | Tuf-Flex | Solid PTFE |
|---|---|---|---|---|---|---|---|
| ½ | A80MP-U-0.5 | A80MP-E-0.5 | A80MP-SFY-0.5 | A80MP-PX-0.5 | A80MP-G-0.5 | A80MP-GTS-0.5 | A80MP-G-0.5-SOLID |
| ¾ | A80MP-U-0.75 | A80MP-E-0.75 | A80MP-SFY-0.75 | A80MP-PX-0.75 | A80MP-G-0.75 | A80MP-GTS-0.75 | A80MP-G-0.75-SOLID |
| 1 | A80MP-U-1 | A80MP-E-1 | A80MP-SFY-1 | A80MP-PX-1 | A80MP-G-1 | A80MP-GTS-1 | A80MP-G-1-SOLID |
| 1½ | A80MP-U-1.5 | A80MP-E-1.5 | A80MP-SFY-1.5 | A80MP-PX-1.5 | A80MP-G-1.5 | A80MP-GTS-1.5 | A80MP-G-1.5-SOLID |
| 2 | A80MP-U-2 | A80MP-E-2 | A80MP-SFY-2 | A80MP-PX-2 | A80MP-G-2 | A80MP-GTS-2 | A80MP-G-2-SOLID |
| 2½ | A80MP-U-2.5 | A80MP-E-2.5 | A80MP-SFY-2.5 | A80MP-PX-2.5 | A80MP-G-2.5 | A80MP-GTS-2.5 | A80MP-G-2.5-SOLID |
| 3 | A80MP-U-3 | A80MP-E-3 | A80MP-SFY-3 | A80MP-PX-3 | A80MP-G-3 | A80MP-GTS-3 | A80MP-G-3-SOLID |
| 4 | A80MP-U-4 | A80MP-E-4 | A80MP-SFY-4 | A80MP-PX-4 | A80MP-G-4 | A80MP-GTS-4 | A80MP-G-4-SOLID |
| 6 | A80MP-U-6 | A80MP-E-6 | A80MP-SFY-6 | A80MP-PX-6 | A80MP-G-6 | - | - |
Additional configurations: Vertical - VER, eccentric - ECC, electropolished - EP.
Slit Gaskets
Slit ID Gaskets Type I are used with perforated, sock, screen, and orifice plates. Slit gaskets include the same certification as regular gaskets of the same materials.
| Size (in) | Buna | EPDM | FKM/Viton | Silicone | PTFE/Teflon | Teflon Steel |
|---|---|---|---|---|---|---|
| 1 | A80MP-U-1-SLIT | A80MP-E-1-SLIT | A80MP-SFY-1-SLIT | A80MP-PX-1-SLIT | A80MP-G-1-SLIT | A80MP-TUF-1-SLIT |
| 1½ | A80MP-U-1.5-SLIT | A80MP-E-1.5-SLIT | A80MP-SFY-1.5-SLIT | A80MP-PX-1.5-SLIT | A80MP-G-1.5-SLIT | A80MP-TUF-1.5-SLIT |
| 2 | A80MP-U-2-SLIT | A80MP-E-2-SLIT | A80MP-SFY-2-SLIT | A80MP-PX-2-SLIT | A80MP-G-2-SLIT | A80MP-TUF-2-SLIT |
| 2½ | A80MP-U-2.5-SLIT | A80MP-E-2.5-SLIT | A80MP-SFY-2.5-SLIT | A80MP-PX-2.5-SLIT | A80MP-G-2.5-SLIT | A80MP-TUF-2.5-SLIT |
| 3 | A80MP-U-3-SLIT | A80MP-E-3-SLIT | A80MP-SFY-3-SLIT | A80MP-PX-3-SLIT | A80MP-G-3-SLIT | A80MP-TUF-3-SLIT |
| 4 | A80MP-U-4-SLIT | A80MP-E-4-SLIT | A80MP-SFY-4-SLIT | A80MP-PX-4-SLIT | A80MP-G-4-SLIT | A80MP-TUF-4-SLIT |
| 6 | A80MP-U-6-SLIT | A80MP-E-6-SLIT | A80MP-SFY-6-SLIT | A80MP-PX-6-SLIT | A80MP-G-6-SLIT | A80MP-TUF-6-SLIT |
Tri-Clamp Gasket Dimensions

| Nominal Size (in) | ID (in) | ID (mm) | OD (in) | OD (mm) | Bead (in) | Bead (mm) |
|---|---|---|---|---|---|---|
| ½ | 0.40 | 10.2 | 0.87 | 22 | * | * |
| ¾ | 0.64 | 16.2 | 0.87 | 22 | * | * |
| 1 | 0.90 | 22.9 | 2.00 | 50.5 | 1.71 | 43.5 |
| 1½ | 1.39 | 35.3 | 2.00 | 50.5 | 1.71 | 43.5 |
| 2 | 1.88 | 47.8 | 2.52 | 64 | 2.22 | 56.5 |
| 2½ | 2.39 | 60.5 | 3.05 | 77.5 | 2.78 | 70.5 |
| 3 | 2.88 | 73.1 | 3.58 | 91 | 3.29 | 83.5 |
| 4 | 3.85 | 97.7 | 4.67 | 119 | 4.33 | 110 |
| 6 | 5.80 | 147.2 | 6.57 | 167 | 6.16 | 156.5 |
| 8 | 7.80 | 198 | 8.56 | 217.4 | 8.15 | 207 |
| 10 | 9.74 | 247.4 | 10.55 | 268 | 10.12 | 257 |
| 12 | 11.74 | 298.2 | 12.56 | 319 | 12.17 | 309 |
*½ and ¾ inch gaskets do not have a ferrule bead.
Gauge Guard Isolator Gaskets
Safeguard pressure gauges with gauge guard isolator gaskets. These gaskets are designed to shield instruments from corrosive or hot fluids, ensuring precision and durability of your valuable equipment. Offered in EPDM, Viton, Silicone, and Teflon.
| Nominal Size (in) | EPDM | FKM/Viton | Silicone | Teflon |
|---|---|---|---|---|
| ¾ | 42GGI-E-0.75 | 42GGI-SFY-0.75 | 42GGI-PX-0.75 | 42GGI-G-0.75 |
| 1 | 40GGI-E-1 | 40GGI-SFY-1 | 40GGI-PX-1 | 40GGI-G-1 |
| 1½ | 40GGI-E-1.5 | 40GGI-SFY-1.5 | 40GGI-PX-1.5 | 40GGI-G-1.5 |
| 2 | 40GGI-E-2 | 40GGI-SFY-2 | 4GGI-PX-2 | 40GGI-G-2 |
Gauge Guard Protector Gaskets
Gauge Guard Protector gaskets are designed to protect instruments during maintenance and autoclave processes.
| Nominal Size (in) | Silicone | White Silicone |
|---|---|---|
| ¾ | 42GGP-PX-0.75 | 42GGP-WX-0.75 |
| 1 | 40GGP-PX-1 | 40GGP-WX-1 |
| 1½ | 40GGP-PX-1.5 | 40GGP-WX-1.5 |
| 2 | 40GGP-PX-2 | 40GGP-WX-2 |
Bevel Seat Gaskets

| Size (in) | Buna | Viton/FKM | EPDM | Tuf-Steel | ID (in) | OD (in) |
|---|---|---|---|---|---|---|
| 1 | 40BSB-U-1 | 40BSB-SFY-1 | 40BS-E-1 | 40BS-TS-1 | 0.900 | 1.325 |
| 1½ | 40BSB-U-1.5 | 40BSB-SFY-1.5 | 40BS-E-1.5 | 40BS-TS-1.5 | 1.375 | 1.875 |
| 2 | 40BSB-U-2 | 40BSB-SFY-2 | 40BS-E-2 | 40BS-TS-2 | 1.850 | 2.375 |
| 2½ | 40BSB-U-2.5 | 40BSB-SFY-2.5 | 40BS-E-2.5 | 40BS-TS-2.5 | 2.340 | 2.950 |
| 3 | 40BSB-U-3 | 40BSB-SFY-3 | 40BS-E-3 | 40BS-TS-3 | 2.875 | 3.475 |
| 4 | 40BSB-U-4 | 40BSB-SFY-4 | 40BS-E-4 | 40BS-TS-4 | 3.700 | 4.500 |

| Size (in) | PTFE/Teflon | PTFE/Teflon | ID (in) | OD (in) |
|---|---|---|---|---|
| 1 | 40BSH-1 | 40BSS-1 | 0.900 | 1.325 |
| 1½ | 40BSH-1.5 | 40BSS-1.5 | 1.375 | 1.875 |
| 2 | 40BSH-2 | 40BSS-2 | 1.850 | 2.375 |
| 2½ | 40BSH-2.5 | 40BSS-2.5 | 2.340 | 2.950 |
| 3 | 40BSH-3 | 40BSS-3 | 2.875 | 3.475 |
| 4 | 40BSH-4 | 40BSS-4 | 3.700 | 4.500 |

| Size (in) | PTFE/Teflon Standard | PTFE/Teflon Heavy Duty | ID (in) | OD (in) |
|---|---|---|---|---|
| 1 | 40BS-DH-1 | 40BS-DHR-1 | 0.900 | 1.325 |
| 1½ | 40BS-DH-1.5 | 40BS-DHR-1.5 | 1.375 | 1.875 |
| 2 | 40BS-DH-2 | 40BS-DHR-2 | 1.850 | 2.375 |
| 2½ | 40BS-DH-2.5 | 40BS-DHR-2.5 | 2.340 | 2.950 |
| 3 | 40BS-DH-3 | 40BS-DHR-3 | 2.875 | 3.475 |
| 4 | 40BS-DH-4 | 40BS-DHR-4 | 3.700 | 4.500 |
Type O Bevel Seat Gaskets

| Size (in) | Buna | ID (in) | OD (in) |
|---|---|---|---|
| 1 | 40BSO-U-1 | 0.900 | 1.325 |
| 1½ | 40BSO-U-1.5 | 1.375 | 1.875 |
| 2 | 40BSO-U-2 | 1.850 | 2.375 |
| 2½ | 40BSO-U-2.5 | 2.340 | 2.950 |
| 3 | 40BSO-U-3 | 2.875 | 3.475 |
| 4 | 40BSO-U-4 | 3.700 | 4.500 |
Available in EPDM, Viton, and Silicone
Flat Bevel Seat Gaskets
| Size (in) | Buna | ID (in) | OD (in) |
|---|---|---|---|
| 1 | 40BSF-U-1 | 0.900 | 1.325 |
| 1½ | 40BSF-U-1.5 | 1.375 | 1.875 |
| 2 | 40BSF-U-2 | 1.850 | 2.375 |
| 2½ | 40BSF-U-2.5 | 2.340 | 2.950 |
| 3 | 40BSF-U-3 | 2.875 | 3.475 |
| 4 | 40BSF-U-4 | 3.700 | 4.500 |
I-Line Gaskets
| Size (in) | EPDM | White EPDM | Buna | White Buna | Silicone | Viton/FKM | Teflon/PTFE | TUF-STEEL | ID (in) | OD (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 40I-E-1 | 40I-EW-1 | 40I-H-1 | 40I-HW-1 | 40I-X-1 | 40I-SFY-1 | 40I-T-1 | 40I-GTS-1 | 0.91 | 1.27 |
| 1½ | 40I-E-1.5 | 40I-EW-1.5 | 40I-H-1.5 | 40I-HW-1.5 | 40I-X-1.5 | 40I-SFY-1.5 | 40I-T-1.5 | 40I-GTS-1.5 | 1.41 | 1.76 |
| 2 | 40I-E-2 | 40I-EW-2 | 40I-H-2 | 40I-HW-2 | 40I-X-2 | 40I-SFY-2 | 40I-T-2 | 40I-GTS-2 | 1.88 | 2.26 |
| 2½ | 40I-E-2.5 | 40I-EW-2.5 | 40I-H-2.5 | 40I-HW-2.5 | 40I-X-2.5 | 40I-SFY-2.5 | 40I-T-2.5 | 40I-GTS-2.5 | 2.40 | 2.77 |
| 3 | 40I-E-3 | 40I-EW-3 | 40I-H-3 | 40I-HW-3 | 40I-X-3 | 40I-SFY-3 | 40I-T-3 | 40I-GTS-3 | 2.88 | 3.32 |
| 4 | 40I-E-4 | 40I-EW-4 | 40I-H-4 | 40I-HW-4 | 40I-X-4 | 40I-SFY-4 | 40I-T-4 | 40I-GTS-4 | 3.89 | 4.30 |
| 6 | 40I-E-6 | 40I-EW-6 | 40I-H-6 | 40I-HW-6 | 40I-X-6 | 40I-SFY-6 | 40I-T-6 | 40I-GTS-6 | 6.31 | 6.72 |
HDI Gaskets

| Size (in) | EPDM | Buna | PTFE | SFY |
|---|---|---|---|---|
| 1 | HDI-40-E-1 | HDI-40-U-1 | HDI-40-G-1 | HDI-40-SFY-1 |
| 1½ | HDI-40-E-1.5 | HDI-40-U-1.5 | HDI-40-G-1.5 | HDI-40-SFY-1.5 |
| 2 | HDI-40-E-2 | HDI-40-U-2 | HDI-40-G-2 | HDI-40-SFY-2 |
2½ | HDI-40-E-2.5 | HDI-40-U-2.5 | HDI-40-G-2.5 | HDI-40-SFY-2.5 |
| 3 | HDI-40-E-3 | HDI-40-U-3 | HDI-40-G-3 | HDI-40-SFY-3 |
| 4 | HDI-40-E-4 | HDI-40-U-4 | HDI-40-G-4 | HDI-40-SFY-4 |
Sch. 5 Clamp Gaskets
Sch. 5 Tri-Clamp Gasket
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Sch. 5 Tri-Clamp Flanged Gasket
![]() |
Note: 4" and above is offered as flanged.
Sanitary schedule 5 type II flange clamp gaskets meet FDA, USP Class VI criteria, FDA Title 21 CFR 177 .2600, FDA Title 21 CFR 177 .1550, only Current Good Manufacturing Practices (CGMP), ASME, Animal Derived Ingredient Free (ADI), FDA compliant mold release. BUNA-N is FDA.
Sch. 5 Envelope Gasket

| Size (in) | EPDM Insert | FKM/Viton Insert |
|---|---|---|
| 1 | A40MV-GR-E-1 | A40MV-GR-SFY-1 |
| 1.5 | A40MV-GR-E-1.5 | A40MV-GR-SFY-1.5 |
| 2 | A40MV-GR-E-2 | A40MV-GR-SFY-2 |
| 2.5 | A40MV-GR-E-2.5 | A40MV-GR-SFY-2.5 |
| 3 | A40MV-GR-E-3 | A40MV-GR-SFY-3 |
| 4 | A40MVF-GR-E-4 | A40MVF-GR-SFY-4 |
| 5 | A40MVF-GR-E-5 | A40MVF-GR-SFY-5 |
| 6 | A40MVF-GR-E-6 | A40MVF-GR-SFY-6 |
| 8 | A40MVF-GR-E-8 | A40MVF-GR-SFY-8 |
| 10 | A40MVF-GR-E-10 | A40MVF-GR-SFY-10 |
| 12 | A40MVF-GR-E-12 | A40MVF-GR-SFY-12 |
Note: 4" and above only offered in Flange type.
150# and 300# Full Face Flange Gaskets
Gaskets suitable for service with ANSI 150# and 300# rated flange connections. Dimensions per ANSI B16.5 standard for pipe flanges and gaskets. Thickness 1/16" (0.0625") and 3/8" (0.125").

| Size (in) | Buna | EPDM | FKM/Viton | Silicone | PTFE | A #150 OD (in) | B #150 ID (in) | A #300 OD (in) | B #300 ID (in) |
|---|---|---|---|---|---|---|---|---|---|
| ½ | 42FF-U-0.5-150-0.125 | 42FF-E-0.5-150-0.125 | 42FF-SFY-0.5-150-0.125 | 42FF-PX-0.5-150-0.125 | 42FF-G-0.5-150-0.125 | 3.50 | 0.84 | 3.75 | 0.84 |
| ¾ | 42FF-U-0.75-150-0.125 | 42FF-E-0.75-150-0.125 | 42FF-SFY-0.75-150-0.125 | 42FF-PX-0.75-150-0.125 | 42FF-G-0.75-150-0.125 | 3.88 | 1.06 | 4.63 | 1.06 |
| 1 | 40FF-U-1-150-0.125 | 40FF-E-1-150-0.125 | 40FF-SFY-1-150-0.125 | 40FF-PX-1-150-0.125 | 40FF-G-1-150-0.125 | 4.25 | 1.31 | 4.88 | 1.31 |
| 1½ | 40FF-U-1.5-150-0.125 | 40FF-E-1.5-150-0.125 | 40FF-SFY-1.5-150-0.125 | 40FF-PX-1.5-150-0.125 | 40FF-G-1.5-150-0.125 | 5.00 | 1.91 | 6.13 | 1.91 |
| 2 | 40FF-U-2-150-0.125 | 40FF-E-2-150-0.125 | 40FF-SFY-2-150-0.125 | 40FF-PX-2-150-0.125 | 40FF-G-2-150-0.125 | 6.00 | 2.38 | 6.50 | 2.38 |
| 2½ | 40FF-U-2.5-150-0.125 | 40FF-E-2.5-150-0.125 | 40FF-SFY-2.5-150-0.125 | 40FF-PX-2.5-150-0.125 | 40FF-G-2.5-150-0.125 | 7.00 | 2.88 | 7.50 | 2.88 |
| 3 | 40FF-U-3-150-0.125 | 40FF-E-3-150-0.125 | 40FF-SFY-3-150-0.125 | 40FF-PX-3-150-0.125 | 40FF-G-3-150-0.125 | 7.50 | 3.50 | 8.25 | 3.50 |
| 4 | 40FF-U-4-150-0.125 | 40FF-E-4-150-0.125 | 40FF-SFY-4-150-0.125 | 40FF-PX-4-150-0.125 | 40FF-G-4-150-0.125 | 9.00 | 4.50 | 10.00 | 4.50 |
| 6 | 40FF-U-6-150-0.125 | 40FF-E-6-150-0.125 | 40FF-SFY-6-150-0.125 | 40FF-PX-6-150-0.125 | 40FF-G-6-150-0.125 | 11.00 | 6.63 | 12.50 | 6.63 |
| 8 | 40FF-U-8-150-0.125 | 40FF-E-8-150-0.125 | 40FF-SFY-8-150-0.125 | 40FF-PX-8-150-0.125 | 40FF-G-8-150-0.125 | 13.50 | 8.63 | 15.00 | 8.63 |
| 10 | 40FF-U-10-150-0.125 | 40FF-E-10-150-0.125 | 40FF-SFY-10-150-0.125 | 40FF-PX-10-150-0.125 | 40FF-G-10-150-0.125 | 16.00 | 10.75 | 17.50 | 10.75 |
| 12 | 40FF-U-12-150-0.125 | 40FF-E-12-150-0.125 | 40FF-SFY-12-150-0.125 | 40FF-PX-12-150-0.125 | 40FF-G-12-150-0.125 | 19.00 | 12.75 | 20.50 | 12.75 |
150# and 300# ANSI Flange Gaskets
Gaskets suitable for service with ANSI* 150# and 300# rated flanged connections. PTFE outside center and EPDM or FKM (viton) inner core. Bonded construction provides a PTFE (Teflon) gasket with the mechanical characteristics, including memory, of an elastomer gasket with steam resistance.
![]() | ![]()
|
| Size (in) | EPDM Core | FKM/Viton Core | A (in) | B (in) |
|---|---|---|---|---|
| ½ | 40FF-G-E-0.5-150-0.197 | 40FF-G-SFY-0.5-150-0.197 | 3.39 | 0.71 |
| ¾ | 40FF-G-E-0.75-150-0.197 | 40FF-G-SFY-0.75-150-0.197 | 3.78 | 0.87 |
| 1 | 40FF-G-E-1-150-0.197 | 40FF-G-SFY-1-150-0.197 | 4.13 | 1.14 |
| 1½ | 40FF-G-E-1.5-150-0.197 | 40FF-G-SFY-1.5-150-0.197 | 4.91 | 1.69 |
| 2 | 40FF-G-E-2-150-0.197 | 40FF-G-SFY-2-150-0.197 | 5.91 | 2.13 |
| 2½ | 40FF-G-E-2.5-150-0.197 | 40FF-G-SFY-2.5-150-0.197 | 6.89 | 2.72 |
| 3 | 40FF-G-E-3-150-0.197 | 40FF-G-SFY-3-150-0.197 | 7.40 | 3.15 |
| 4 | 40FF-G-E-4-150-0.197 | 40FF-G-SFY-4-150-0.197 | 8.90 | 4.06 |
| 6 | 40FF-G-E-6-150-0.197 | 40FF-G-SFY-6-150-0.197 | 10.91 | 6.02 |
| 8 | 40FF-G-E-8-150-0.197 | 40FF-G-SFY-8-150-0.197 | 13.39 | 7.87 |
| 10 | 40FF-G-E-10-150-0.197 | 40FF-G-SFY-10-150-0.197 | - | - |
| 12 | 40FF-G-E-12-150-0.197 | 40FF-G-SFY-12-150-0.197 | - | - |
*American National Standards Institute
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