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Technical Data Sheet
300-501 ✓ Verified by PartsTable
· 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include color: BLACK SINGLE ACTUATOR, material: RUBBER SYNTHETIC OVERALL, body_style: BUSHING MOUNTED, body_width: 2.625 INCHES NOMINAL IN, body_height: 3.000 INCHES NOMINAL IN, body_length: 0.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-102-8378, 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 300-501
NSN: 5330-00-102-8378
FSC: 5330
CAGE: 07524 — DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER (USA)
SPECIFICATIONS
colorBLACK SINGLE ACTUATOR
materialRUBBER SYNTHETIC OVERALL
body_styleBUSHING MOUNTED
body_width2.625 INCHES NOMINAL IN
body_height3.000 INCHES NOMINAL IN
body_length0.250 INCHES NOMINAL IN
design_typeBLADE SINGLE ANTENNA ELEMENT
power_rating3.50 WATTS NORMAL
usage_designINDOOR
actuator_typeFLUSH DRIVE WITH SLOT-HOLE
body_diameter0.312 INCHES NOMINAL IN
overall_depth2.438 INCHES NOMINAL IN
NSN5330-00-102-8378
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 300-501 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
COLOR: BLACK
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER: 0.625 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: U
PERIPHERAL DIAMETER: 1.000 INCHES NOMINAL IN
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
COLORBLACK
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.625 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEU
PERIPHERAL DIAMETER1.000 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MIL-A-25708/3Interchangeable
interchangeable cross-reference
interchangeable
3-00501Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25708/3Interchangeable
interchangeable cross-reference
interchangeable
170201-3VInterchangeable
interchangeable cross-reference
interchangeable
5A15Interchangeable
interchangeable cross-reference
interchangeable
P5VST107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 300-501?
300-501 is a RESISTOR,VARIABLE,WIRE WOUND,NON. It is classified as a MRO (MRO_GENERAL).
What parts can replace 300-501?
There are 9 known substitutes for 300-501: MIL-A-25708/3, 3-00501, MIL-DTL-25708/3 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 300-501?
300-501 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-102-8378. This indicates validated use in U.S. government and defense supply chains.
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