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 5990-01-134-7756
NSN 5915-01-005-9670
NSN 5925-01-084-5421
NSN 5930-01-024-7888
NSN 6135-00-992-8750
NSN 6220-01-442-7282
NSN 6135-01-400-2947
NSN 6150-00-943-7368
NSN 5985-01-471-8343
NSN 6685-01-168-8893
NSN 5999-00-407-7118
NSN 6645-01-167-5814