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 6130-01-577-5042
NSN 6240-00-170-5302
NSN 2925-01-534-5389
NSN 5998-00-562-0020
NSN 5950-01-147-5419
NSN 6320-01-232-4664
NSN 5998-01-650-0027
NSN 6320-00-937-5625
NSN 5990-01-492-1114
NSN 5975-01-239-8850
NSN 5905-01-077-3332
NSN 5925-01-082-9349