The Seal Kit,cylinder, cataloged under National Stock Number 4930-01-200-2277, is classified within Federal Supply Class 4930 (Lubrication and Fuel Dispensing Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Energy Manufacturing Co. Inc.. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4930-01-200-2277 |
| Primary Part Number | A-6639 |
| Item Name | Seal Kit,cylinder |
| FSC / FSG | 4930 / 49 — Lubrication and Fuel Dispensing Equipment |
| Manufacturer | Energy Manufacturing Co. Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | C/OWEAR RING 3 IN. OD,0.500 IN.W,0.025 IN. THK;WIPER RING;PISTON RING 3 IN.OD;U-CUP 1.250 IN. ID,1.625 IN. OD,0.313 IN. DP;BACK-UP WASHER 2.750 IN. ID,3 IN. OD;O-RING 2.750 IN. ID,3 IN. OD;O-RING 2.188 IN. ID,2.750 IN. OD;O-RING 0.750 IN. ID,0.875 IN. OD IN |
| 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 |
|---|---|
| A-6639 PRIMARY | Energy Manufacturing Co. Inc. (USA) |
NSN 4930-01-200-2277 is a Seal Kit,cylinder, manufactured by Energy Manufacturing Co. Inc., classified under FSC 4930, Lubrication and Fuel Dispensing Equipment. Status: active.
NSN 4930-01-200-2277 has 1 manufacturer part number on file: A-6639 (Energy Manufacturing Co. Inc.).
Key specifications for A-6639: General Characteristics Item Description: C/OWEAR RING 3 IN. OD,0.500 IN.W,0.025 IN. THK;WIPER RING;PISTON RING 3 IN.OD;U-CUP 1.250 IN. ID,1.625 IN. OD,0.313 IN. DP;BACK-UP WASHER 2.750 IN. ID,3 IN. OD;O-RING 2.750 IN. ID,3 IN. OD;O-RING 2.188 IN. ID,2.750 IN. OD;O-RING 0.750 IN. ID,0.875 IN. OD IN; End Item Identification: 4930011392492. 1 specification is 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.