The O-Ring, cataloged under National Stock Number 5331-01-643-5988, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Cunico Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-643-5988 |
| Primary Part Number | DCL-1600-DN-CVN(SHT 7)PART1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Cunico Corporation |
| Status | ACTIVE |
| Cross-Sectional Height | 0.063 INCHES NOMINAL IN |
| Hardness Rating | 85.0 SHORE DUROMETER C MINIMUM AND 95.0 SHORE DUROMETER C MAXIMUM |
| Material Document and Classification | AMS-R-83248, TY-1, CL-2 ASSN STD SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.594 INCHES NOMINAL IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DCL-1600-DN-CVN(SHT 7)PART1 PRIMARY | Cunico Corporation (USA) |
| DCL-1600-DN-CVN-(SHT7) PART 1 | Dynamic Controls Ltd (GBR) |
NSN 5331-01-643-5988 is a O-Ring, manufactured by Cunico Corporation, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-643-5988 has 2 manufacturer part numbers on file: DCL-1600-DN-CVN(SHT 7)PART1 (Cunico Corporation), DCL-1600-DN-CVN-(SHT7) PART 1 (Dynamic Controls Ltd).
Key specifications for DCL-1600-DN-CVN(SHT 7)PART1: Cross-Sectional Height: 0.063 INCHES NOMINAL IN; Hardness Rating: 85.0 SHORE DUROMETER C MINIMUM AND 95.0 SHORE DUROMETER C MAXIMUM; Material Document and Classification: AMS-R-83248, TY-1, CL-2 ASSN STD SINGLE MATERIAL RESPONSE; Center Hole Diameter: 0.594 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.