We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
APPROVED VENDOR Sealing Washer: M12 Screw Sz, Copper, Copper Seal, 12 mm Inside Dia, 16 mm Outside Dia - Single-Piece Sealing Washers
APPROVED VENDORSingle-Piece Sealing Washers

APPROVED VENDOR Sealing Washer: M12 Screw Sz, Copper, Copper Seal, 12 mm Inside Dia, 16 mm Outside Dia

The APPROVED VENDOR Single-Piece Sealing Washer (SKU 5ZLU3) is a copper seal for M12 screw sizes, supplied in a 25-pack. It features a 12 mm inside diameter and 16 mm outside diameter, is ID bonded for use with a…

SKU 3G-OTH-534530

Brand
APPROVED VENDOR
Item
Sealing Washer: M12 Screw Sz, Copper, Copper Seal, 12 mm Inside Dia, 16 mm Outside Dia
Category
Single-Piece Sealing Washers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
5ZLU3
Type
Copper, Copper Seal, 25 PK
Pack Size
Small Pack
Inside Dia
12 mm
Outside Dia
16 mm
FDA Approval
Not FDA Approved
Product Type
Sealing Washer
Seal Material
Copper
Metal Detection
Metal Detectable
Washer Sub Type
ID Bonded - For Use With Nut
X-Ray Detection
X-Ray Detectable
Seal Material Color
Natural
System of Measurement
Metric
Compatible Product Type
For Use with Nut
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Single-Piece Sealing Washer (SKU 5ZLU3) is a copper seal for M12 screw sizes, supplied in a 25-pack. It features a 12 mm inside diameter and 16 mm outside diameter, is ID bonded for use with a nut, and is both metal and X-ray detectable. This metric washer is not FDA approved.

Frequently Asked Questions

What is an APPROVED VENDOR sealing washer used for?

This copper sealing washer is used to create a leak-proof seal under nuts and bolts in industrial piping, hydraulic, and pneumatic systems. Its metal and X-ray detectable properties make it ideal for food processing and pharmaceutical environments where contamination detection is critical, though it is not FDA approved.

What are the specifications of the APPROVED VENDOR 5ZLU3 sealing washer?

The 5ZLU3 is a metric copper sealing washer for M12 screw sizes, with a 12 mm inside diameter and 16 mm outside diameter. It is ID bonded for use with a nut, metal detectable, X-ray detectable, and supplied in a 25-pack. It is not FDA approved.

Where to buy APPROVED VENDOR sealing washers worldwide?

3G Electric supplies the APPROVED VENDOR 5ZLU3 sealing washer to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this 25-pack of copper sealing washers.

How to install an APPROVED VENDOR copper sealing washer?

Place the sealing washer between the nut and the mating surface, ensuring the ID bonded side faces the nut. Tighten to the manufacturer's recommended torque for M12 fasteners. The copper material deforms slightly to create a reliable seal. Replace after each use for optimal performance.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR single-piece sealing washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from APPROVED VENDOR

View all APPROVED VENDOR parts →
Flat Washer: 3/8 in Screw Sz, Fiber Seal, 0.379 in Inside Dia, 1/2 in Outside Dia, 10 PK (MPN Z8612). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Fiber; Seal Material Color: Red; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.
APPROVED VENDOR
Flat Washer: 3/8 in Screw Sz, Fiber Seal, 0.379 in Inside Dia, 1/2 in Outside Dia, 10 PK (MPN Z8612). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Fiber; Seal Material Color: Red; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.
Flat Washer: #4 Screw Sz, Neoprene Seal, 0.125 in Inside Dia, 3/8 in Outside Dia, Neoprene, 25 PK (MPN Z8505). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Neoprene; Seal Material Color: Black; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.
APPROVED VENDOR
Flat Washer: #4 Screw Sz, Neoprene Seal, 0.125 in Inside Dia, 3/8 in Outside Dia, Neoprene, 25 PK (MPN Z8505). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Neoprene; Seal Material Color: Black; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.
APPROVED VENDOR
APPROVED VENDOR
Sealing Washer: M10 Screw Sz, Copper, Copper Seal, 10 mm Inside Dia, 19 mm Outside Dia, 100 PK (MPN M50302.100.0019). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
APPROVED VENDOR
APPROVED VENDOR
Sealing Washer: M26 Screw Sz, Copper, Copper Seal, 26 mm Inside Dia, 32 mm Outside Dia, 10 PK (MPN M50302.260.0032). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
Sealing Washer: M17.5 Screw Sz, Copper, Copper Seal, 17.5 mm Inside Dia, 25 mm Outside Dia, 25 PK (MPN M50302.175.0025). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
APPROVED VENDOR
Sealing Washer: M17.5 Screw Sz, Copper, Copper Seal, 17.5 mm Inside Dia, 25 mm Outside Dia, 25 PK (MPN M50302.175.0025). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
Sealing Washer: M16.5 Screw Sz, Copper, Copper Seal, 16.5 mm Inside Dia, 24 mm Outside Dia, 25 PK (MPN M50302.165.0024). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
APPROVED VENDOR
Sealing Washer: M16.5 Screw Sz, Copper, Copper Seal, 16.5 mm Inside Dia, 24 mm Outside Dia, 25 PK (MPN M50302.165.0024). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Seal Material Color: Gray; Pack Size: Small Pack.
APPROVED VENDOR
APPROVED VENDOR
Sealing Washer: M10 Screw Sz, Copper, Copper Seal, 10 mm Inside Dia, 20 mm Outside Dia, 100 PK (MPN M50301.100.0020). Key specifications — Brand: APPROVED VENDOR; Product Type: Sealing Washer; System of Measurement: Metric; Seal Material: Copper; Pack Size: Small Pack.
Flat Washer: #6 Screw Sz, Neoprene Seal, 0.156 in Inside Dia, 7/16 in Outside Dia, Neoprene, 25 PK (MPN Z8510). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Neoprene; Seal Material Color: Black; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.
APPROVED VENDOR
Flat Washer: #6 Screw Sz, Neoprene Seal, 0.156 in Inside Dia, 7/16 in Outside Dia, Neoprene, 25 PK (MPN Z8510). Key specifications — Brand: APPROVED VENDOR; Product Type: Flat Washer; System of Measurement: Inch; Seal Material: Neoprene; Seal Material Color: Black; FDA Approval: Not FDA Approved; Metal Detection: Not Metal Detectable.