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 5975-01-459-7072
NSN 5950-01-126-8270
NSN 6130-00-052-7621
NSN 5985-01-310-8473
NSN 2925-01-164-9579
NSN 5905-01-175-2499
NSN 6110-01-050-8119
NSN 6145-00-340-6698
NSN 6130-01-168-8001
NSN 5945-01-142-4263
NSN 5915-00-495-0788
NSN 6685-01-426-8929