OEM Copper Sealing Washer, M21 Screw Size, 21 mm ID x 28 mm OD, 25 Pack
The APPROVED VENDOR Sealing Washer (SKU 3G-OTH-534454) is a single-piece copper sealing washer for M21 screw sizes, supplied in a 25-pack. It features a 21 mm inside diameter and 28 mm outside diameter, with a gray…
SKU 3G-OTH-534454
Also listed as: M503022100028 · M50302 210 0028 · M50302-210-0028
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The APPROVED VENDOR Sealing Washer (SKU 3G-OTH-534454) is a single-piece copper sealing washer for M21 screw sizes, supplied in a 25-pack. It features a 21 mm inside diameter and 28 mm outside diameter, with a gray copper seal material. This metric sealing washer is part of a small pack, identified by manufacturer part number M50302.210.0028.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is an APPROVED VENDOR copper sealing washer used for?
This copper sealing washer is used to create a leak-proof seal between bolted joints, such as drain plugs and hydraulic fittings, in industrial machinery and fluid systems. The copper material compresses under torque to fill surface irregularities, preventing leaks in high-pressure or high-temperature applications.
What are the specifications of the APPROVED VENDOR M21 sealing washer?
This metric sealing washer has a 21 mm inside diameter and 28 mm outside diameter, designed for M21 screw sizes. It is made of copper with a gray seal material, supplied in a 25-pack small pack. The manufacturer part number is M50302.210.0028, and it is a single-piece sealing washer.
Where to buy APPROVED VENDOR sealing washers worldwide?
3G Electric supplies and delivers the APPROVED VENDOR sealing washer (SKU 3G-OTH-534454) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure reliable delivery to your facility. Contact us for availability and lead time on this copper sealing washer.
How to install a copper sealing washer for M21 bolts?
Clean the mating surfaces and ensure the bolt and washer are free of debris. Place the copper sealing washer over the M21 bolt, then tighten to the manufacturer's recommended torque specification. Copper washers are typically single-use; replace with a new washer each time the joint is disassembled to maintain a reliable seal.
OEM Products
3G Electric supplies OEM single-piece sealing washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.