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 6685-01-381-0445
NSN 6685-00-123-7981
NSN 5925-01-275-7266
NSN 2925-01-144-7106
NSN 5910-01-301-4803
NSN 6320-01-125-3361
NSN 6650-01-143-4586
NSN 6145-01-411-5895
NSN 6130-00-018-8621
NSN 5945-01-267-7192
NSN 5935-01-235-8277
NSN 6610-00-862-5901