Mptfe polytetrafluoroethylene.
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6685-01-010-3234
NSN 6645-00-478-6509
NSN 6135-01-222-0703
NSN 6620-00-246-5159
NSN 6610-00-527-8892
NSN 5910-01-431-9072
NSN 5905-01-082-5306
NSN 5998-00-518-5118
NSN 6320-00-908-6841
NSN 2925-01-076-5219
NSN 4140-00-483-1932
NSN 5975-01-145-2086