Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Post Onsite · Engine
10100B
In stock · ships from Knoxville
This is a 3-inch Teflon envelope flange gasket designed for TTMA (Truck Trailer Manufacturers Association) standard flanges.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Standard 3-inch TTMA flange gasket; fits any make or model of tank trailer or truck with a 3-inch TTMA flange connection.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It creates a leak-proof seal between pipe flanges on tank trucks and trailers, commonly used in petroleum, chemical, and dry bulk cargo systems. The Teflon envelope provides chemical resistance and durability, making it a typical replacement item during routine maintenance or when a leak occurs at a flange connection. It is often sourced from brands like Pelican, Allegheny Coupling, or Nuseal.
Part Number: 10100B
3 TEFLON ENV. GASKET
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more