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 6645-00-137-7699
NSN 6110-01-190-8487
NSN 5950-01-555-7801
NSN 5999-00-437-6503
NSN 5925-01-629-9266
NSN 7035-01-324-3839
NSN 7035-01-537-4334
NSN 6620-01-647-1393
NSN 6105-01-359-9504
NSN 5895-00-076-8232
NSN 6685-01-144-2802
NSN 5905-01-411-6741