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 2925-01-301-1727
NSN 5930-01-340-5411
NSN 5996-01-418-2802
NSN 6135-01-354-5535
NSN 5945-01-467-9886
NSN 6685-00-637-8553
NSN 6645-00-256-4072
NSN 6145-01-371-2916
NSN 6220-01-631-0414
NSN 5965-00-303-9701
NSN 5950-01-068-3783
NSN 5945-01-324-6188