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 5895-00-633-0431
NSN 6240-01-076-5231
NSN 6645-00-922-8312
NSN 6240-00-246-6201
NSN 6610-01-375-1527
NSN 5999-01-453-7798
NSN 7035-01-249-4547
NSN 5905-01-253-0460
NSN 6220-01-555-7860
NSN 5990-01-198-4748
NSN 5855-00-933-9978
NSN 5910-00-313-7206