Is the JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN, compatible with standard O-ring materials for sealing?

Yes . the JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN Format, which is sealed with an O-ring, is generally compatible with standard O-ring materials, but compatibility depends on the specific elastomer and the fluid/temperature conditions. Key points: - The fitting uses an O-ring seal in a metal-to-metal style body; standard elastomers commonly used are NBR (nitrile), FKM (Viton), EPDM, and sometimes HNBR or silicone. - NBR is the typical default for hydraulic oils and mineral-based fluids (good for â30Â°C to +100Â°C). - FKM (Viton) is recommended for higher temperatures and aggressive fluids (good for roughly â20Â°C to +200Â°C). - EPDM is suitable for water/glycol and brake fluids but incompatible with most petroleum oils. - HNBR offers improved heat/oil resistance over NBR for harsher hydraulic applications. Selection guidance: - Match the O-ring material to the hydraulic fluid, temperature range, and pressure cycling of your system. - Verify chemical compatibility with the specific fluid (additives, synthetic oils) and expected temperature extremes. - Ensure correct O-ring size and gland geometry for the GE-UN Format fitting to achieve proper squeeze and sealing. Conclusion: The JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN Format is compatible with standard O-ring materials, provided you choose the appropriate elastomer (NBR, FKM, EPDM, HNBR, etc.) for your fluid and temperature conditions and confirm size/gland fit.

Does the JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN, require specific O-ring hardness for reliable sealing?

Yes. The JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN Format uses an O-ring to seal the external UNF thread, so O-ring hardness matters for reliable sealing. Choose a hardness that balances compression and resilience for your application: typically 70â90 Shore A for general hydraulic service, with 70â80 Shore A common for rubber elastomers (NBR) and 80â90 Shore A for harder compounds (EPDM, FKM) or higher-pressure systems. Also consider fluid compatibility, temperature range, and pressure: higher temperature or aggressive fluids may require harder or chemically resistant materials (FKM, HNBR) and possibly higher hardness for extrusion resistance. Verify manufacturer recommendations and perform pressure/temperature validation.

Can the JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN be used with hydraulic fluids at high temperatures without O-ring degradation?

Not necessarily. it depends on the Oâring material and the specific hydraulic fluid and temperature. The JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN Format itself (carbon steel, galvanized, 37Â° JIC seat with external UNF thread sealed with an Oâring) is mechanically suitable for many hydraulic systems, but the Oâring is the limiting factor for highâtemperature service. Key considerations: - Oâring compound: Common elastomers (NBR, HNBR, FKM/Viton, EPDM, PTFE seals, silicone) have very different temperature and fluid compatibility ranges. For example, NBR typically handles about â40 Â°C to +100 Â°C, HNBR to â+150 Â°C, FKM to â+200 Â°C, and PTFE much higher. If the fitting uses an Oâring material not rated for your high operating temperature, rapid degradation, hardening, swelling or extrusion will occur, causing leaks. - Hydraulic fluid chemistry: Some fluids (phosphate esters, waterâglycol, synthetic oils, fireâresistant fluids) attack certain elastomers more aggressively. Always match Oâring material to both temperature and fluid type. - Pressure and dynamic conditions: High pressure, vibration, or repeated thermal cycling accelerate Oâring wear and extrusion. Use appropriate backup rings or higherâtemperature elastomers if needed. - Galvanized carbon steel body: Galvanizing provides corrosion protection but can affect sealing surfaces if damaged; it does not improve Oâring temperature resistance. Recommendation: - Verify the specific Oâring material used in the JIC straight connection fitting with UNF UNG in carbon steel, type GE-UN Format. - Confirm the maximum operating temperature and fluid compatibility for that Oâring with the fluid in your system. - If temperatures are high (>100â150 Â°C) or fluid is aggressive, specify a highâtemperature Oâring (e.g., FKM/Viton, perfluoroelastomer, or PTFE backup/seat) and appropriate backup rings or a different sealing design. - Consult the fitting manufacturerâs datasheet or technical support for approved Oâring compounds and maximum service temperatures. Conclusion: The fitting can be used at elevated temperatures only if the installed Oâring material is compatible with your hydraulic fluid and temperature; otherwise Oâring degradation and leakage are likely.

Fitting straight JIC with UNF male of carbon steel, type GE-UN

Additional information

Material	CS – steel (cast iron)

Fitting straight JIC 37° with UNF male thread (sealing an O-ring). Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HJ-GE-07-UN-07	Fitting male JIC 7/16"-20 / 7/16"-20 UNF male	-	400	In stock	Enquiry
HJ-GE-07-UN-08	Fitting male JIC 7/16"-20 / 1/2"-20 UNF male	-	400	In stock	Enquiry
HJ-GE-07-UN-09	Fitting male JIC 7/16"-20 / 9/16"-18 UNF male	-	350	In stock	Enquiry
HJ-GE-07-UN-12	Fitting male JIC 7/16"-20 / 3/4"-16 UNF male	-	350	In stock	Enquiry
HJ-GE-08-UN-08	Fitting male JIC 1/2"-20 / 1/2"-20 UNF male	-	350	In stock	Enquiry
HJ-GE-08-UN-09	Fitting male JIC 1/2"-20 / 9/16"-18 UNF male	-	350	In stock	Enquiry
HJ-GE-09-UN-07	Fitting male JIC 9/16"-18 / 7/16"-20 UNF male	-	350	In stock	Enquiry
HJ-GE-09-UN-08	Fitting male JIC 9/16"-18 / 1/2"-20 UNF male	-	350	In stock	Enquiry
HJ-GE-09-UN-09	Fitting male JIC 9/16"-18 / 9/16"-18 UNF male	-	350	In stock	Enquiry
HJ-GE-09-UN-12	Fitting male JIC 9/16"-18 / 3/4"-16 UNF male	-	350	In stock	Enquiry
HJ-GE-09-UN-14	Fitting male JIC 9/16"-18 / 7/8"-14 UNF male	-	350	In stock	Enquiry
HJ-GE-12-UN-09	Fitting male JIC 3/4"-16 / 9/16"-18 UNF male	-	350	In stock	Enquiry
HJ-GE-12-UN-12	Fitting male JIC 3/4"-16 / 3/4"-16 UNF male	-	350	In stock	Enquiry
HJ-GE-12-UN-14	Fitting male JIC 3/4"-16 / 7/8"-14 UNF male	-	350	In stock	Enquiry
HJ-GE-12-UN-17	Fitting male JIC 3/4"-16 / 1.1/16"-12 UNF male	-	350	In stock	Enquiry
HJ-GE-14-UN-12	Fitting male JIC 7/8"-14 / 3/4"-16 UNF male	-	350	In stock	Enquiry
HJ-GE-14-UN-14	Fitting male JIC 7/8"-14 / 7/8"-14 UNF male	-	350	In stock	Enquiry
HJ-GE-14-UN-17	Fitting male JIC 7/8"-14 / 1.1/16"-12 UNF male	-	350	In stock	Enquiry
HJ-GE-17-UN-12	Fitting male JIC 1.1/16"-12 / 3/4"-16 UNF male	-	350	In stock	Enquiry
HJ-GE-17-UN-14	Fitting male JIC 1.1/16"-12 / 7/8"-14 UNF male	-	350	In stock	Enquiry
HJ-GE-17-UN-17	Fitting male JIC 1.1/16"-12 / 1.1/16"-12 UNF male	-	350	In stock	Enquiry
HJ-GE-17-UN-21	Fitting male JIC 1.1/16"-12 / 1.5/16" UNF male	-	290	In stock	Enquiry
HJ-GE-21-UN-14	Fitting male JIC 1.5/16"-12 / 7/8"-14 UNF male	-	290	In stock	Enquiry
HJ-GE-21-UN-17	Fitting male JIC 1.5/16"-12 / 1.1/16"-12 UNF male	-	290	In stock	Enquiry
HJ-GE-21-UN-21	Fitting male JIC 1.5/16"-12 / 1.5/16"-12 UNF male	-	290	In stock	Enquiry
HJ-GE-21-UN-26	Fitting male JIC 1.5/16"-12 / 1.5/8"-12 UNF male	-	240	In stock	Enquiry
HJ-GE-26-UN-21	Fitting male JIC 1.5/8"-12 / 1.5/16"-12 UNF male	-	240	In stock	Enquiry
HJ-GE-26-UN-26	Fitting male JIC 1.5/8"-12 / 1.5/8"-12 UNF male	-	240	In stock	Enquiry
HJ-GE-30-UN-26	Fitting male JIC 1.7/8"-12 / 1.5/8"-12 UNF male	-	240	In stock	Enquiry
HJ-GE-30-UN-30	Fitting male JIC 1.7/8"-12 / 1.7/8"-12 UNF male	-	240	In stock	Enquiry