PartsTable
Technical Data Sheet
PartsTable / MRO / 128-37
128-37 ✓ Verified by PartsTable
Trust · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Trust Numeric Keypad & USB Hub is suitable for use with a notebook, so that you can still make full use of the keyboard. This keypad can also be used as a USB hub. The Trust Numeric Keypad & USB Hub does not require any special maintenance.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-531-3197, 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
MRO→ MRO_GENERAL→ 128-37
NSN: 5330-00-531-3197
FSC: 5330
CAGE: 03533 — CRANE CARRIER COMPANY, LLC (USA)
SPECIFICATIONS
materialCORK AND RUBBER SYNTHETIC OVERALL
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.000 INCHES NOMINAL IN
overall_length1.750 INCHES NOMINAL IN
proof_pressure330.00 POUNDS PER SQUARE INCH GAGE LBS
special_featuresCROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE FROM OLD FIIG A03200
pressure_switch_typeGAGE
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE AND DEACTUATION POINT NOT ADJUSTABLE
outside_corner_radius0.125 INCHES NOMINAL IN
contact_action_stimulusINCREASE
contact_stimulus_rating45.00 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH GAGE AND 40.00 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH GAGE
end_item_identificationFRONT/SIDE LOADER FORKLIFT
NSN5330-00-531-3197
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128-37 MFR: Trust ⚠ 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 SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH: 0.500 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.125 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL: CORK AND RUBBER SYNTHETIC OVERALL
•
HOLE DIAMETER: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
CROSS-SECTIONAL THICKNESS: 0.047 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.500 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.125 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALCORK AND RUBBER SYNTHETIC OVERALL
HOLE DIAMETER0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CROSS-SECTIONAL THICKNESS0.047 INCHES NOMINAL IN
OVERALL LENGTH1.750 INCHES NOMINAL IN
OVERALL WIDTH1.000 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.125 INCHES NOMINAL IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.313 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
41911Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 61Interchangeable
interchangeable cross-reference
interchangeable
AL-32Interchangeable
interchangeable cross-reference
interchangeable
544956Interchangeable
interchangeable cross-reference
interchangeable
16230Interchangeable
interchangeable cross-reference
interchangeable
A283698Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 128-37?
128-37 is a SWITCH,PRESSURE manufactured by Trust. It is classified as a MRO (MRO_GENERAL).
What parts can replace 128-37?
There are 20 known substitutes for 128-37: 41911, B94.19 TABLE 61, AL-32 and 17 more. Substitute compatibility should be verified for your specific system.
Is 128-37 still available?
128-37 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026