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 5920-00-267-3109
NSN 5915-01-209-6449
NSN 5935-01-367-2245
NSN 2925-01-381-5307
NSN 5935-01-415-0887
NSN 5935-00-182-4791
NSN 5930-01-163-0557
NSN 2925-01-483-2389
NSN 4140-00-948-0355
NSN 6620-01-575-9561
NSN 5935-01-212-4222
NSN 4140-01-625-2804