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 5965-00-170-8676
NSN 5990-01-449-7090
NSN 6685-01-437-4904
NSN 5950-01-017-2053
NSN 6650-00-147-8765
NSN 6645-00-930-3566
NSN 5930-00-945-4450
NSN 6620-01-407-1158
NSN 7035-00-421-8710
NSN 6130-01-519-9337
NSN 5925-00-374-4852
NSN 6135-01-435-5558