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 6135-01-551-0562
NSN 5950-01-382-3392
NSN 2925-01-601-5050
NSN 5925-00-139-2752
NSN 6320-01-643-0850
NSN 5895-01-360-2116
NSN 5975-00-086-2309
NSN 5910-01-164-5590
NSN 5925-00-092-0578
NSN 5960-00-597-2680
NSN 5998-00-955-2428
NSN 4140-01-514-0709