The Retainer Seal,diluent, cataloged under National Stock Number 4220-01-233-6918, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-233-6918 |
| Primary Part Number | 200-517CP |
| Item Name | Retainer Seal,diluent |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 200-517CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 400-221 ITEM 17CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 400-221 ITEM 17 | 5/1 Secondary reference Biomarine Inc |
| 300-629 ITEM 20CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 300-629 ITEM 20 | 5/1 Secondary reference Biomarine Inc |
| 400-200-24CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 200-517 | 3/1 Design control — primary reference Biomarine Inc |
| 400-200-24 | 5/1 Secondary reference Biomarine Inc |
NSN 4220-01-233-6918 is a Retainer Seal,diluent, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-233-6918 has 1 manufacturer part number on file: 200-517CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-428-4443. Verify interchangeability with system specifications before substitution.
Key specifications for 200-517CP: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 2 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.