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 5945-00-576-9375
NSN 5895-00-918-7783
NSN 2925-01-415-0264
NSN 5935-01-108-5836
NSN 5975-01-085-5824
NSN 5895-01-497-4866
NSN 6240-00-998-7765
NSN 5935-01-286-2647
NSN 5975-01-435-3600
NSN 6620-01-416-1757
NSN 6685-00-528-5175
NSN 5930-00-144-4994