Can the QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 be used in high-temperature environments near 204Â°C?

Yes. The QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 can be used in environments up to +204Â°C - its specified operating temperature range is â26Â°C to +204Â°C. Note that it is not designed for pressure transfer; its purpose is to protect plugs and sockets from contamination and damage when disconnected. Material: AISI 316 stainless steel.

Does the QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 resist corrosion in marine environments?

Yes. The QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 offers strong resistance to corrosion in marine environments because it is manufactured from AISI 316 stainless steel. AISI 316 contains molybdenum which significantly improves resistance to chloride-induced corrosion (pitting and crevice corrosion) compared with lower-grade stainless steels, making it a common choice for marine and coastal applications. Additional points relevant to marine use: - Material suitability: AISI 316 is widely used in marine settings and performs well against saltwater exposure, splash and humid, salty atmospheres. - Physical protection: The cap protects plugs and sockets from contamination and damage when the quick coupling is disconnected, reducing corrosion risk caused by trapped debris or moisture. - Temperature range: Operating temperature from -26Â°C to +204Â°C covers typical marine conditions and many industrial temperature excursions. - Limitation: The cap is not designed for pressure transfer; it is a protective cover, not a pressure-rated sealing component. Long-term performance in highly aggressive marine environments (continuous submersion in seawater, splash zones with heavy salt spray, or environments with strong pollutants) may still require periodic inspection and maintenance, and in extremely aggressive situations additional corrosion protection measures (e.g., sacrificial anodes, coatings, or more corrosion-resistant alloys) could be advisable. Conclusion: For typical marine surface and splash-zone applications, the QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 is corrosion-resistant and suitable due to its AISI 316 construction, but assess exposure severity and maintenance needs for long-term use.

Quick-coupling plug cap QC-LOK®, with a cable, type QC4, QC6

Q: Is the QC-LOKÂ® quick connector plug cap, with cord, type QC4 and QC6, suitable for use in pressure transfer applications?

No. The QC-LOKÂ® quick connector plug cap, with cord, type QC4, QC6 is not suitable for pressure transfer applications. According to the product description, the cap is designed to protect plugs and sockets from contamination and damage when the quick coupling is disconnected, and it is explicitly stated that the cap is not designed for pressure transfer. It is made of AISI 316 steel and rated for operation from â26Â°C to +204Â°C, with sizes 1/4" and 3/8", but it should not be used to transfer or contain pressure.

All products, Precision threaded fasteners/

Quick-coupling plug cap QC-LOK®, with a cable, type QC4, QC6

Additional information

Material	SS – stainless steel

Quick-coupling plug cap QC4 and QC6 compliant with the standard Standard Instrumentation, with a cable. Size: 1/4″, 3/8″. The cap is not designed for carrying pressure. It protects plugs and sockets from contamination and damage when the quick coupling is disconnected. Material: steel AISI 316. Operating temperature: from -26°C to +204°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
HM-QC4-SP-SS	Plug cap QC4, SS	-	-	In stock	0 zł		Enquiry
HM-QC6-SP-SS	Plug cap QC6, SS	-	-	In stock	0 zł		Enquiry

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Quick-coupling plug cap QC4 and QC6 compliant with the standard Standard Instrumentation, with a cable. Size: 1/4″, 3/8″. The cap is not designed for carrying pressure. It protects plugs and sockets from contamination and damage when the quick coupling is disconnected. Material: steel AISI 316. Operating temperature: from -26°C to +204°C.