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 2925-01-443-5929
NSN 6145-01-129-2836
NSN 5999-00-186-2471
NSN 2925-00-402-5582
NSN 6320-01-261-2848
NSN 5905-00-166-0358
NSN 6150-01-068-3489
NSN 5975-01-415-2357
NSN 6645-00-935-7046
NSN 5925-01-344-3707
NSN 5925-01-030-9227
NSN 6130-01-029-4250