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 5998-01-217-1754
NSN 5930-00-364-3654
NSN 5905-00-798-8814
NSN 5990-01-425-2175
NSN 2925-01-277-5882
NSN 5930-01-128-2619
NSN 6240-01-159-8314
NSN 6620-00-371-7109
NSN 5925-01-119-2406
NSN 6650-01-340-9809
NSN 5945-01-410-6799
NSN 6610-01-103-4627