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 6645-01-043-5236
NSN 6220-01-419-0380
NSN 6130-00-202-4688
NSN 6130-01-281-5103
NSN 5996-01-035-8219
NSN 5985-00-376-5682
NSN 5975-01-464-2867
NSN 2925-01-113-6904
NSN 5999-01-217-3617
NSN 5935-01-460-2225
NSN 6320-01-607-1491
NSN 6105-01-150-0663