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 5905-00-731-1863
NSN 5999-01-605-4523
NSN 6645-01-466-9477
NSN 5965-01-497-5961
NSN 5930-01-182-5618
NSN 6150-00-382-6018
NSN 5985-01-062-5538
NSN 5895-01-070-8881
NSN 5990-01-553-6859
NSN 7035-01-357-7786
NSN 5996-01-469-8905
NSN 6685-01-391-4402