SMC KQ2 Series Brass, Stainless Steel, Polypropylene, Polybutylene Terephthalate Cap for 4 mm Metric

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Subtotal (1 pack of 5 units)*

$19.01

(exc. GST)

$20.91

(inc. GST)

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  • 235 unit(s) ready to ship from another location
  • Plus 10 unit(s) shipping from 24 September 2026
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Per Pack*
5 - 20$3.802$19.01
25 - 45$3.762$18.81
50 +$3.686$18.43

*price indicative

RS Stock No.:
771-4898
Distrelec Article No.:
304-35-932
Mfr. Part No.:
KQ2C04-00A
Brand:
SMC
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Brand

SMC

Sub Type

Cap

Product Type

Cap

Thread Standard

Metric

Tube Size

4 mm

Series

KQ2

Material

Brass, Stainless Steel, Polypropylene, Polybutylene Terephthalate

Outside Diameter

8.2mm

Standards/Approvals

RoHS

For Use With

Nylon and Urethane

Overall Length

14.5mm

SMC KQ2 Series Cap, 8.2mm Outside Diameter, 14.5mm Overall Length - KQ2C04-00A


This cap is a pneumatic tubing end closure designed to seal unused or terminated lines in fluid and Air systems. It fits onto 4 mm tubing MADE from nylon or urethane and is manufactured from a selection of materials to suit varied installation requirements. The component incorporates a metric threaded Interface and is intended for applications where a compact, compliant closure is required.

Features and Benefits:


• Constructed from brass, stainless steel and polypropylene for material choice
• Compatible with polybutylene terephthalate for alternative chemical resistance
• RoHS‑compliant tube cap for restricted‑substance conformity
• Metric‑thread pneumatic cap enabling standardised threaded connections
• Pneumatic push‑to‑connect cap 4 mm for fast installation

Applications


• Used with nylon and urethane tubing in pneumatic manifolds
• Suitable for sealing supply lines during system maintenance
• Ideal for temporary closure of experimental pneumatic setups
• Can be used for isolating branches in compressed‑air distribution
• Used for end‑cap protection in assembly and storage situations

What tubing sizes will it accept?


It accepts 4 mm tube dimensions suited to compatible nylon and urethane tubing.

Which materials are available for this component?


The construction options include brass, stainless steel, polypropylene and polybutylene terephthalate.

How does the connection Interface present itself?


The closure uses a metric threaded Interface to engage standard metric fittings.

Is the component compliant with substance‑restriction standards?


The part is RoHS‑compliant, restricting specific hazardous materials.

Note

Models with a -X2 suffix in the Mfr Part No. are copper-free (electroless nickel plated).

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