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691839 — TRANSFORMER,POWER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

691839: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include body_width: 5.690 INCHES MAXIMUM IN, body_height: 5.880 INCHES MAXIMUM IN, body_length: 7.750 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, first_end_style: FLAT KEYWAY, mounting_method: UNTHREADED HOLE(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-013-4438, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
691839
NSN: 5330-01-013-4438
NIINs: 010134438, 011589101, 013593744
FSC: 5330 — Packing and Gasket Materials
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
body_width5.690 INCHES MAXIMUM IN
body_height5.880 INCHES MAXIMUM IN
body_length7.750 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
first_end_styleFLAT KEYWAY
mounting_methodUNTHREADED HOLE(S) SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
outer_groove_width0.260 INCHES NOMINAL IN
peripheral_diameter3.586 INCHES NOMINAL IN
center_hole_diameter3.250 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
cross-sectional_height0.435 INCHES NOMINAL IN
NSN5330-01-013-4438
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 691839 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.435 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 3.586 INCHES NOMINAL IN
•
OUTER GROOVE WIDTH: 0.260 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.435 INCHES NOMINAL IN
PERIPHERAL DIAMETER3.586 INCHES NOMINAL IN
OUTER GROOVE WIDTH0.260 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 691839?
691839 is a TRANSFORMER,POWER.
What is the NSN for 691839?
691839 is cataloged in the U.S. Government catalog under NSN 5330-01-013-4438. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.