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 5895-00-939-7479
NSN 6130-01-418-1606
NSN 5915-00-610-6099
NSN 5930-00-452-9958
NSN 6145-00-497-1578
NSN 5975-01-111-3623
NSN 6620-01-144-2488
NSN 6145-01-202-7750
NSN 5960-00-692-2887
NSN 6620-01-182-0282
NSN 5925-01-286-2805
NSN 5895-00-847-1801