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 5945-01-040-5749
NSN 5950-01-299-1035
NSN 6135-00-497-0491
NSN 5965-00-552-9636
NSN 5905-01-240-3210
NSN 5998-01-333-7484
NSN 6650-01-587-8380
NSN 5965-00-801-7410
NSN 5999-01-176-5155
NSN 5930-00-405-4065
NSN 6320-01-608-1935
NSN 6685-01-159-6352