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Metric Copper Sealing Washers

d Diameter 24mm	Adaptall Material Steel	S Misc 1.4mm	Adaptall Shape Component	Side 1 Callout M18 X 1.5	Side 1 Gender -	Side 1 Size 18mm	Side 1 Type Metric	Alternate Part Numbers Alternate Part Number MI-08790514, Alternate Part Number MINO-03671X90024	Brand Adaptall America	Brand Adaptall	Pack Size 1.00	UOM EA	Supplier Part Number 3500-18MM	Product Weight 0.01 lbs

Product Questions & Answers 3

Product Questions & Answers

What size system is this sealing washer meant for? Just want to make sure it fits my M18 setup.

Question by: Ronnie P on Nov 5, 2025, 5:44 PM

These copper sealing washers are designed to fit M18 x 1.5 metric systems, providing a secure seal to maintain equipment integrity.

Answer by: Customer Support on Nov 7, 2025, 12:24 PM

got an M18 x 1.5 setup, is this washer the right size or am i gonna be fighting it

Question by: Cody H on Dec 4, 2025, 11:02 AM

These are made for M18 x 1.5 metric systems with an 18 mm side 1 size. The washer itself is 24 mm in diameter and 1.4 mm thick, so it matches that M18 x 1.5 callout while giving you a sealing surface.

Answer by: Customer Support on Dec 5, 2025, 1:57 PM

these fit an M18 x 1.5 port, that right? just want to make sure before I order a bunch of em

Question by: Harvey W on Oct 11, 2025, 12:44 PM

that's correct. The part number 3500-18MM is sized for M18 x 1.5 metric fittings, with an outer diameter of 24mm and a thickness of 1.4mm. Pretty standard sealing washer for that thread size.

Answer by: Customer Support on Oct 13, 2025, 9:32 AM