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 6240-00-361-1421
NSN 6620-01-102-0008
NSN 5996-01-279-4273
NSN 6685-01-146-5249
NSN 5990-01-294-6198
NSN 5930-01-096-7406
NSN 2925-00-969-8340
NSN 6620-01-130-5700
NSN 6135-00-209-6918
NSN 5920-00-548-3789
NSN 6645-01-510-3496
NSN 5950-01-487-3750