Does the CEJN 525 and 526 PVC quick connector socket cap, black fit all CEJN 525/526 Nordic range sockets and prevent contamination during downtime?

Yes. The CEJN 525 and 526 PVC quick connector socket cap, black is designed specifically as a blind plug for the CEJN quick coupling series 525 and 526 (Nordic Range). Made of PVC and shaped to fit those socket types, it protects the connections from contamination that could damage components or allow impurities into the system. In short: it fits the CEJN 525/526 Nordic range sockets and prevents contamination during downtime.

Is the CEJN 525 and 526 PVC quick connector socket cap, black compatible with other brands' quick coupling sockets to prevent contamination?

CEJN 525 and 526 PVC quick connector socket cap, black is designed as a blind plug specifically for CEJN quick coupling series 525 and 526 to protect connections from contamination and ingress of impurities. While its PVC construction and cap shape may physically fit some other brandsâ sockets, compatibility is not guaranteed due to variations in dimensions, sealing geometry and tolerances between manufacturers. Using it on non-CEJN couplings may result in poor sealing and insufficient protection. For reliable contamination prevention, use caps specified by the coupling manufacturer or verify exact dimensional and sealing compatibility before interchange.

Can the CEJN 525 and 526 PVC quick connector socket cap, black withstand outdoor weather and UV exposure?

No. the CEJN 525 and 526 PVC quick connector socket cap, black is not recommended for prolonged outdoor weather and UV exposure. Explanation: The cap is made of PVC and designed as a blind plug to protect CEJN quick coupling series 525 and 526 from contamination and ingress of impurities. Standard unmodified PVC provides good chemical resistance and protection against dirt and moisture for indoor or temporary outdoor use, but it degrades under extended UV radiation and harsh outdoor conditions: prolonged sun exposure can cause discoloration, embrittlement and loss of mechanical integrity over time. If you need long-term outdoor or UV-stable protection, choose a product specifically rated for UV resistance or made from UV-stabilized materials (e.g., UV-stabilized PVC, polycarbonate, or specialized elastomers) or use additional UV-protective coatings or covers.

CEJN 525 and 526 PVC quick connector socket cap, black

All products, Hydraulic quick couplings/

Additional information

Material	P – material (plastic)

Blind plug for CEJN quick coupling series 525 and 526 (NORDIC RANGE), protecting connections from contamination that may result in damage to components and the ingress of impurities into the system. Material: PVC. Color: black.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
CJ-H-095251001	CEJN 525 1/4" socket plug	-	-
CJ-H-095251002	CEJN 525 3/8" socket plug	-	-
CJ-H-095251003	CEJN 525 1/2" socket plug	-	-
CJ-H-095251004	CEJN 525 3/4" socket plug	-	-
CJ-H-095251005	CEJN 525 socket plug 1"	-	-

Blind plug for CEJN quick coupling series 525 and 526 (NORDIC RANGE), protecting connections from contamination that may result in damage to components and the ingress of impurities into the system. Material: PVC. Color: black.