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 4140-00-936-0233
NSN 5945-01-556-5893
NSN 5935-01-614-5478
NSN 2925-01-476-3224
NSN 5835-00-051-9092
NSN 6610-00-222-4108
NSN 6645-01-053-3185
NSN 6645-01-252-6708
NSN 6145-01-142-2234
NSN 6645-01-352-6583
NSN 6685-01-401-5360
NSN 6220-01-026-7260