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 5895-00-905-7178
NSN 5960-01-435-0677
NSN 6220-01-011-0865
NSN 6135-01-507-4346
NSN 5985-01-270-6273
NSN 5920-01-184-3195
NSN 6110-01-494-0394
NSN 6130-00-231-3929
NSN 5990-01-097-4721
NSN 5945-01-426-6563
NSN 5920-01-449-1321
NSN 5960-00-281-0824