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 5910-01-168-9188
NSN 5835-01-238-3381
NSN 5925-01-451-5700
NSN 5930-00-285-0317
NSN 6220-00-407-8143
NSN 6135-01-462-1135
NSN 6645-01-205-0549
NSN 6105-01-248-6859
NSN 5950-01-593-3875
NSN 5985-01-025-1491
NSN 5960-01-071-6267
NSN 6645-01-137-1684