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Metric Tube Cap

Description & Features

Designed to seal unused DIN tube ports, this steel Metric Tube Cap from Adaptall provides a secure, leak-free closure for M26 x 1.5 metric tube connections. The soft seal design ensures a reliable fit against the tube end, making it well suited for capping off open ports in hydraulic circuits during testing, reconfiguration, or when a circuit branch is not in active use.

Sized at L18 with a 32mm wrench width and an overall length of 18mm, this cap is a compact, purpose-built fitting for DIN tube applications. Steel construction provides the durability expected in demanding industrial hydraulic environments. As part of the Adaptall fitting system, it is consistent with the dimensional and material standards of that product family.

SKU: 5204L-18

Supplier Part Number (MPN): 5204L-18

Specifications

CH Width 32mm	L Length 18mm	Adaptall Material Steel	Adaptall Shape Cap	Side 1 Callout M26 X 1.5	Side 1 Gender F	Side 1 Size L18	Side 1 Type Din Tube	Brand Adaptall America	Brand Adaptall	Pack Size 1.00	UOM EA	Supplier Part Number 5204L-18	Product Weight 0.25 lbs

Product Questions & Answers (2)

Question by: Freddie J on Jun 10, 2025, 12:37 PM

What size wrench do I need for this cap?

Answer by: Customer Support on Jun 12, 2025, 6:28 AM

You'll need a 32mm wrench to tighten this cap down.

Question by: Janice T on Oct 15, 2025, 1:44 PM

what size thread does this cap fit on, and is it metric?

Answer by: Customer Support on Oct 17, 2025, 6:46 AM

M26 x 1.5 is the thread spec, so yes, fully metric. It's a DIN soft seal tube cap sized for L18 tube, which puts it in pretty common territory for metric hydraulic hydraulic connections. The wrench flat across the flats runs 32mm, so you'll want the right size wrench on hand before you go to tighten it down.