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 6130-01-487-3708
NSN 6150-00-487-4484
NSN 6320-01-370-5222
NSN 6150-01-531-8906
NSN 2925-00-066-9700
NSN 6220-01-227-1917
NSN 6135-00-935-5241
NSN 5975-00-491-7668
NSN 6135-01-101-5039
NSN 5999-01-114-6313
NSN 5945-00-522-1845
NSN 6620-00-269-5168