Is the CEJN 115 quick connect plug with GZ valve, hardened steel compatible with hydraulic oils at temperatures down to â30Â°C?

Yes. The CEJN 115 quick connect plug with GZ valve, hardened steel is specified with an operating temperature range from â30Â°C to +100Â°C and uses NBR (nitrile) seals. NBR is commonly compatible with most hydraulic oils, including mineral-based and many synthetic oils, across that temperature range. Therefore this coupling is suitable for use with hydraulic oils at temperatures down to â30Â°C, provided the specific hydraulic fluid formulation is NBR-compatible (very aggressive fluids or certain additives may require alternative seal materials).

Can the CEJN 115 quick connect plug with GZ valve, hardened steel withstand repeated cycling at 1000 bar without seal degradation?

Short answer: Likely yes for the metal body, but seal life depends on application specifics. Explanation: The CEJN 115 quick connect plug with GZ valve, hardened steel is rated for 1000 bar working pressure (connected) and has a burst pressure of 2600 bar; the hardened steel body and valve are designed for highâpressure hydraulic use. However the sealing material is NBR (nitrile), which is the limiting factor for repeated cycling at 1000 bar. NBR can tolerate high pressure but its fatigue life depends on cycle frequency, pressure spikes, temperature (â30 to +100Â°C range), fluid compatibility, abrasion/contamination and Îp across the seal. Given the low nominal flow (6 l/min at Îp = 4 bar) and small diameter, rapid cycling or pressure transients may accelerate seal wear. Recommendation: For guaranteed long life at high cycle counts, consult CEJN for cycleâlife data or consider alternative seal materials (e.g., FKM/PU) or protective measures (pressure dampening, filtration).

Does the CEJN 115 quick connect plug with GZ valve, hardened steel support use with aggressive hydraulic fluids?

No. The CEJN 115 quick connect plug with GZ valve, hardened steel is specified for hydraulic installations with very high pressures and is made of hardened, galvanized steel with NBR (nitrile) seals. NBR seals have good resistance to mineral hydraulic oils and many lubricants, but poor resistance to aggressive fluids such as strong acids, ketones, aromatic hydrocarbons, phosphate esters with additives, ester-based fireâresistant fluids and many synthetics/solvents. The productâs temperature range (â30Â°C to +100Â°C) and materials indicate suitability for conventional hydraulic oils, not aggressive or chemically aggressive hydraulic fluids. If you plan to use aggressive fluids, choose a coupling specifically rated for chemical compatibility (seals such as FKM/Viton, EPDM, PTFE, or special coatings) and verify manufacturer chemical compatibility data.

CEJN 115 quick-coupling plug with male thread with a valve, hardened steel

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Additional information

Material	CS – steel (cast iron)

CEJN 115 quick-coupling plug with a male thread and with a valve intended for hydraulic installations at very high pressures. Used in hydraulic presses, rescue equipment, hydraulic lifts, cutters, etc. Supplied as standard with a cap to protect against contamination. Material: hardened steel, galvanized. Sealing: NBR. Flow: 6 l/min (Δp = 4 bar). Nominal diameter: 2.5 mm. Working pressure: 1000 bar (coupling connected). Burst pressure: 2600 bar. Operating temperature: from -30°C to +100°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
CJ-HP-101156152	Plug CEJN 115 1/4" BSPT male	-	1000	In stock	Enquiry
CJ-HP-101156154	Plug CEJN 115 3/8" BSPT male	-	1000	In stock	Enquiry
CJ-HP-101156212	Plug CEJN 115 1/4" BSP male	-	1000	In stock	Enquiry
CJ-HP-101156452	Plug CEJN 115 1/4" NPT male	-	1000	In stock	Enquiry
CJ-HP-101156454	Plug CEJN 115 3/8" NPT male	-	1000	In stock	Enquiry

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CEJN 115 quick-coupling plug with a male thread and with a valve intended for hydraulic installations at very high pressures. Used in hydraulic presses, rescue equipment, hydraulic lifts, cutters, etc. Supplied as standard with a cap to protect against contamination. Material: hardened steel, galvanized. Sealing: NBR. Flow: 6 l/min (Δp = 4 bar). Nominal diameter: 2.5 mm. Working pressure: 1000 bar (coupling connected). Burst pressure: 2600 bar. Operating temperature: from -30°C to +100°C.