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 5925-01-361-8447
NSN 5920-00-362-1376
NSN 5945-00-296-8464
NSN 5975-00-494-0593
NSN 6685-01-284-1602
NSN 5920-00-156-9230
NSN 5910-01-567-1566
NSN 6145-01-296-5580
NSN 5950-01-124-5516
NSN 6135-01-132-6310
NSN 5925-01-023-1411
NSN 5975-01-442-4109