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 5999-01-493-7639
NSN 6320-01-322-8340
NSN 6610-00-446-2880
NSN 6105-00-801-4442
NSN 6145-01-137-4473
NSN 5985-00-403-2408
NSN 5915-01-083-4838
NSN 6110-01-139-4646
NSN 6220-01-630-3976
NSN 4140-01-163-8796
NSN 5925-01-027-7334
NSN 6620-01-091-3722