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128377 — O-RING

✓ Government record, cited
Mobiparts · ORING SEAL
PRODUCT OVERVIEW

128377: O-RING.

Elegant and Functional with lots of credit card storage space This elegant case is the perfect combination of protection and convenience. Whether you're on the go or out for the evening, this slim, luxurious case keeps everything you need within reach. Your essential cards and smartphone stay safe and organized.

Choose convenience and style with the Classic Wallet Case. Features: Mobiparts Classic Wallet case Design: functional, perfect fit and slim design Closure: made out of 1 piece, seamless and magnetic Colour: Available in blue, green, velvet red and black Card slot: yes, 3x creditcard slots, 1x storage compartment for paper money/notes Lining: soft microfibre Outer Material: smooth imitation leather Basic shell material: shock absorbing TPU case Compatible with: Samsung Galaxy A16 360-Degree Protection: optimal protection against daily use, scratches, bumps and dirt This part is cataloged in the U.S. Government catalog under NSN 5331-01-408-4848, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
128377
NSN: 5331-01-408-4848
FSC: 5331 — O-ring
CAGE: 04034 — SETRA SYSTEMS, INC. DBA GEMS SENSORS (USA)
SPECIFICATIONS
Part Number128377
ManufacturerMobiparts
NSN5331-01-408-4848
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128377 MFR: Mobiparts ⚠ 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
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 128377?
128377 is a O-RING manufactured by Mobiparts.
What is the NSN for 128377?
128377 is cataloged in the U.S. Government catalog under NSN 5331-01-408-4848. 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.