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 5999-00-869-6587
NSN 5975-01-076-7834
NSN 6645-01-400-1383
NSN 5965-01-100-4645
NSN 5855-01-195-2518
NSN 6620-01-363-0499
NSN 2925-01-303-5266
NSN 5990-01-503-0194
NSN 2925-00-149-0760
NSN 5950-00-557-8953
NSN 6685-01-481-3847
NSN 6220-01-052-1375