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 6650-01-361-9336
NSN 6685-00-299-8496
NSN 6320-01-338-6006
NSN 6240-01-020-3440
NSN 5855-01-656-6808
NSN 5965-00-275-0491
NSN 6145-00-281-8161
NSN 7035-00-392-5417
NSN 5905-01-099-7336
NSN 5930-01-222-3199
NSN 5855-00-610-4052
NSN 5990-01-411-8548