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 5950-00-852-5279
NSN 5905-00-932-6366
NSN 6620-01-470-6479
NSN 6650-01-179-3823
NSN 6105-00-545-5627
NSN 5998-01-417-2117
NSN 4140-01-303-8271
NSN 5985-01-444-1904
NSN 5855-01-052-0353
NSN 6220-01-080-6362
NSN 6685-00-663-9000
NSN 4140-00-229-8467