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1012-25 — EYESHIELD,OPTICAL INSTRUMENT

✓ Government record, cited
Hama · ORING SEAL
PRODUCT OVERVIEW

1012-25: EYESHIELD,OPTICAL INSTRUMENT.

The EYESHIELD,OPTICAL INSTRUMENT is a Hama optical transceiver module designed for high-speed data center interconnects. Key specifications include material: RUBBER, seal_width: 0.175 INCHES NOMINAL IN, overall_width: 2.000 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 2.870 INCHES NOMINAL IN, overall_length: 2.560 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-033-0074, 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
1012-25
NSN: 5330-00-033-0074
NIINs: 000330074, 005356925, 012890923
FSC: 5330 — Packing and Gasket Materials
CAGE: 81580 — MCCULLOCH CORP (USA)
SPECIFICATIONS
materialRUBBER
seal_width0.175 INCHES NOMINAL IN
overall_width2.000 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height2.870 INCHES NOMINAL IN
overall_length2.560 INCHES NOMINAL IN
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating60.0 HERTZ NOMINAL SINGLE COMPONENT
special_featuresPRIMARY RATED BUT NOT INCLUDED
attachment_methodSLIP ON
housing_bore_diameter0.939 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
NSN5330-00-033-0074
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1012-25 MFR: Hama ⚠ 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
•
SEAL WIDTH: 0.175 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 0.939 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 0.593 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
TYPICAL APPLICATIONS
  • Data center switch-to-switch interconnects
  • Server-to-storage fabric connectivity
  • Long-distance fiber optic links
  • High-speed uplink connections (10G/25G/40G/100G)
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.175 INCHES NOMINAL IN
HOUSING BORE DIAMETER0.939 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER0.593 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 1
340797Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1012-25?
1012-25 is a EYESHIELD,OPTICAL INSTRUMENT manufactured by Hama.
What parts can replace 1012-25?
There is 1 known substitute for 1012-25: 340797. Substitute compatibility should be verified for your specific system.
What is the NSN for 1012-25?
1012-25 is cataloged in the U.S. Government catalog under NSN 5330-00-033-0074. 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.