Tri-Clamp Envelope Gaskets (40MPGR)

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Description

Sanitary tri-clamp envelope gaskets provide dual materials to make a secure, leak-proof connection between clamp fittings.

An envelope gasket is comprised of a core material (EPDM or Viton) covered by PTFE (Teflon). These gaskets provide the benefits of the core material (elasticity, strength, chemical compatibility) coupled with the characteristics of PTFE. A variety of materials are available for selection depending upon medium used inline processing. Gaskets range in size from 1/2 inch to 8 inches. If you would like a copy of a gaskets certificate, please ask for them at the time of order. Certificates are specific per lot of gaskets.  Much like a heat number for fittings, gaskets have what is called a lot number. We don’t log these numbers at the time of order but we do include them on the packaging if you need the certificate after receiving them. Please see Compound Selection Guide for compatibility information. Gasket Cleaning & Maintenance
Size (Tube OD) Material
Teflon®/EPDM Core Teflon®/Viton Core
1/2" 40MPGR-.50-EPDM 40MPGR-.50-VITON
3/4" 40MPGR-.75-EPDM 40MPGR-.75-VITON
1" 40MPGR-1-EPDM 40MPGR-1-VITON
1-1/2" 40MPGR-1.5-EPDM 40MPGR-1.5-VITON
2" 40MPGR-2-EPDM 40MPGR-2-VITON
2-1/2" 40MPGR-2.5-EPDM NA
3 " 40MPGR-3-EPDM NA
4 " 40MPGR-4-EPDM NA
6" 40MPGR-6-EPDM NA
8 " 40MPGR-8-EPDM NA
 

Tri-Clamp Gasket Sizes & Dimensions

Tri-Clamp Gasket Dimensions
Sanitary Size A B C D
1/2" .875 .4375 NA
3/4" .875 .6250 NA
1" 1.984" .900" 1.718" 0.203"
1 1/2" 1.984" 1.400" 1.718" 0.203"
2" 2.515" 1.900" 2.218" 0.203"
2 1/2" 3.050" 2.400" 2.781" 0.203"
3" 3.579" 2.900" 3.281" 0.203"
4" 4.682" 3.869" 4.344" 0.203"
6" 6.570" 5.813" 6.176" 0.203"
8" 8.570" 7.813" 8.165" 0.238"
10" 10.570" 9.813" 10.156" 0.238"
12" 12.570" 11.813" 12.151" 0.238"
 

Tri-Clamp Gasket Comparison Guide

Gasket Temperature Range Recommended Usage Not Recommended Industry Certification Approval
Buna (Nitrile) Standard: -35°F to 250°F (-37°C to 121°C) Water, Oils, Fuels Ketones, Strong Acids, Sunlight, Ozone, Weathering Food & Beverage FDA Approved
EPDM (Ethylene Propylene) Standard: -65°F to 300°F (-54°C to 149°C) Sunlight, Weathering, Hot Water, Steam, Select Acids/Bases, Alcohols Oils, Fuels Bio-Pharmaceutical, Food & Beverage, Drinking Water USP Class VI Tested
PTFE (Teflon®) Standard: -100°F to 450°F (-74°C to 232°C) Chemical, Heat, Pressure Applications Stretching, Elasticity Chemical Processing USP Class VI Tested
FKM (Viton®) Standard: -15°F to 437°F (-26°C to 222°C) Vacuum, Most Acids / Chemicals, Oils, Fuels Ketones, Ammonia, Hot Water / Steam Chemical Processing USP Class VI Tested

Watch How to Measure Tri-Clamp Fittings

Tri-Clamp Fittings and Gasket Sizing Guide

Sanitary Fitting Dimensions
Sanitary Size Flange OD ( ? ) ID of Tube ( ? ) OD of Tube ( ? )
1/2″ 0.984 0.370 0.500
3/4″ 0.984 0.620 0.750
1″ 1.984 0.870 1.000
1 1/2″ 1.984 1.370 1.500
2″ 2.516 1.870 2.000
2 1/2″ 3.047 2.370 2.500
3″ 3.579 2.870 3.000
4″ 4.682 3.834 4.000
6″ 6.562 5.782 6.000
8″ 8.602 7.782 8.000
10″ 10.570 9.782 10.000
12″ 12.570 11.760 12.000

Frequently Asked Questions

Read our guide to Frequently Asked Questions about Tri-Clamp Fittings

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