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 6320-01-125-3361
NSN 6320-01-484-7734
NSN 7035-00-523-7492
NSN 6685-00-269-4895
NSN 6135-01-230-4399
NSN 6130-01-331-3448
NSN 2925-00-749-8893
NSN 6645-01-296-0882
NSN 6610-01-435-4387
NSN 5965-01-215-0993
NSN 5920-00-283-7178
NSN 5945-01-426-4958