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 7035-01-620-0131
NSN 6620-01-541-4465
NSN 5915-00-824-4688
NSN 5975-01-297-5553
NSN 5985-01-411-6301
NSN 6220-01-474-5989
NSN 5905-01-154-6131
NSN 6135-01-528-6896
NSN 5996-00-734-5364
NSN 6145-01-140-1538
NSN 6685-01-033-3731
NSN 5925-01-187-0695