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 5975-01-281-7270
NSN 6610-01-616-8852
NSN 5910-01-633-6937
NSN 6145-01-031-6739
NSN 5975-01-496-3973
NSN 5855-00-962-5792
NSN 6685-01-642-7394
NSN 6240-01-423-8642
NSN 5915-00-284-5430
NSN 6650-00-483-2853
NSN 5985-01-285-8824
NSN 6150-00-198-7395