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 5925-01-555-8524
NSN 5960-00-136-2505
NSN 5975-00-110-1986
NSN 6110-00-127-9568
NSN 6685-00-281-2840
NSN 5990-01-114-5095
NSN 5935-01-426-3212
NSN 5925-01-462-0068
NSN 5930-01-537-0541
NSN 5975-01-527-4532
NSN 5835-01-004-8997
NSN 5855-00-055-1579