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 5935-01-367-0550
NSN 5895-00-316-9518
NSN 6110-01-378-7892
NSN 6145-01-573-7233
NSN 5975-01-055-6866
NSN 5915-01-158-8891
NSN 6685-01-494-4503
NSN 2925-00-411-0600
NSN 5930-01-481-4191
NSN 5915-01-624-7294
NSN 5975-01-400-4204
NSN 6620-00-798-6866