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 6645-01-111-8218
NSN 6150-00-180-5921
NSN 5930-00-482-2386
NSN 5835-01-434-0790
NSN 5855-01-469-6123
NSN 6135-01-142-6456
NSN 2925-00-159-9003
NSN 5960-00-161-0723
NSN 6685-00-309-3101
NSN 2925-01-123-5856
NSN 5835-01-426-6573
NSN 6220-01-024-9444