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 6240-00-052-4592
NSN 5935-00-351-8084
NSN 5985-01-357-5950
NSN 5985-01-230-7609
NSN 6150-01-462-2642
NSN 5935-01-451-3592
NSN 6610-00-971-4881
NSN 6610-01-433-2219
NSN 5985-00-225-9993
NSN 5975-01-259-9157
NSN 5895-01-421-4487
NSN 5925-01-595-3663