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 6150-00-872-6000
NSN 6135-01-010-0891
NSN 6645-01-463-3441
NSN 6685-01-645-6208
NSN 6320-01-088-1109
NSN 5999-00-058-0965
NSN 5920-01-495-1268
NSN 5920-01-468-6227
NSN 6240-01-037-2215
NSN 5985-00-270-8456
NSN 2925-01-250-2731
NSN 5905-00-412-3971