James Gasket Mainshaft Seal - Double Lip Rubber O.D. JGI-37741-82-DL All are top-quality Genuine James gaskets, seals and O-rings The James Gasket flexible paper gasket product line utilizes the latest in gasket paper technology called MicroPore These gaskets exhibit exceptional fluid resistance and sealability in a wide range of applications and flange conditions With a reduced pore size, this material is very resistant to wicking or fluid migration through the material and capable of handling operating temperatures in excess of 500 degrees Made in the USA