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 7035-01-135-7783
NSN 5975-00-038-2813
NSN 5996-01-483-1032
NSN 2925-00-805-6481
NSN 5925-01-478-8540
NSN 5935-01-388-7905
NSN 5965-00-170-5254
NSN 6685-00-080-4315
NSN 5985-00-782-9605
NSN 5990-00-394-3987
NSN 6145-01-653-2229
NSN 6650-01-037-1120