Is the GE-UN screw connection, carbon steel (24Â° DIN 2353) compatible with standard O-rings for sealed external metric and UNF threads?

Yes. The GE-UN screw connection, carbon steel (24Â° DIN 2353) is designed for use with an O-ring seal on its external metric and external UNF threads. Per the DIN 2353 GE-UN description, the 24Â° socket features threaded male ends that are sealed with an O-ring, so standard O-rings sized for the specific thread and gland dimensions of the GE-UN fittings can be used to achieve a pressure-tight external thread seal. Ensure you select O-rings made from a compatible material (e.g., NBR, FKM, EPDM) for the fluid, temperature and pressure involved, and match the O-ring cross-section and inner diameter to the GE-UN thread/gland dimensions per DIN 2353 or the manufacturerâs data. Also respect the assembly torque and the connectionâs 4:1 safety factor and choose the appropriate series (L or S) and galvanization requirements for corrosion resistance.

Can the GE-UN screw connection, carbon steel, meet the 4:1 safety factor under cyclic pressure conditions?

Yes - the GE-UN screw connection, carbon steel can meet a 4:1 safety factor under cyclic pressure conditions provided proper selection and application. DIN 2353 GE-UN fittings (24Â° socket with Oâring, external metric and UNF threads) are rated with a 4:1 safety factor. To ensure this under cyclic loading, use the correct series (S heavy series preferred for higher fatigue resistance), proper material (carbon steel, galvanized), correct installation torque, compatible Oâring and lubrication, and avoid exceeding specified pressure and temperature limits. Inspect for surface damage, maintain recommended service cycles, and follow DIN 2353 assembly and maintenance guidelines. If duty is severe (high frequency or pressure spikes), validate with fatigue calculations or testing for your exact operating profile.

Does the GE-UN screw connection, carbon steel provide interchangeable L and S series options for different pressure ratings?

Yes. The GE-UN screw connection, carbon steel is offered in both L (light) and S (heavy) series to cover different pressure ratings, and these are the interchangeable options provided for varying service requirements. Both series share the same basic 24Â° DIN 2353 socket geometry with external metric and external UNF threads (O-ring sealed) and a safety factor of 4:1; material is carbon steel, galvanized. Choose L for lower-pressure/light-duty applications and S for higher-pressure/heavy-duty applications, ensuring you select the series rated for your systemâs pressure.

Fitting screw-in GE-UN, carbon steel

Additional information

Material	CS – steel (cast iron)

Fitting DIN 2353 screw-in, type GE-UN: 24° DIN 2353 socket with metric male thread and with UNF male thread (sealing an O-ring). Safety factor 4:1. Available as: L (series light), S (series heavy). Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HD-GE-06L-UN-07	Fitting DIN 2353 GE 6L 7/16"-20 UN-UNF	-	315	In stock	Enquiry
HD-GE-06S-UN-08	Fitting DIN 2353 GE 6S 1/2"-20 UN-UNF	-	630	In stock	Enquiry
HD-GE-08L-UN-08	Fitting DIN 2353 GE 8L 1/2"-20 UN-UNF	-	315	In stock	Enquiry
HD-GE-08S-UN-08	Fitting DIN 2353 GE 8S 1/2"-20 UN-UNF	-	630	In stock	Enquiry
HD-GE-10L-UN-08	Fitting DIN 2353 GE 10L 1/2"-20 UN-UNF	-	315	In stock	Enquiry
HD-GE-10S-UN-09	Fitting DIN 2353 GE 10S 9/16"-18 UN-UNF	-	630	In stock	Enquiry
HD-GE-12L-UN-09	Fitting DIN 2353 GE 12L 9/16"-18 UN-UNF	-	315	In stock	Enquiry
HD-GE-12S-UN-09	Fitting DIN 2353 GE 12S 9/16"-18 UN-UNF	-	630	In stock	Enquiry
HD-GE-14S-UN-12	Fitting DIN 2353 GE 14S 3/4"-16 UN-UNF	-	630	In stock	Enquiry
HD-GE-15L-UN-12	Fitting DIN 2353 GE 15L 3/4"-16 UN-UNF	-	315	In stock	Enquiry
HD-GE-16S-UN-12	Fitting DIN 2353 GE 16S 3/4"-16 UN-UNF	-	400	In stock	Enquiry
HD-GE-18L-UN-12	Fitting DIN 2353 GE 18L 3/4"-16 UN-UNF	-	315	In stock	Enquiry
HD-GE-18L-UN-14	Fitting DIN 2353 GE 18L 7/8"-14 UN-UNF	-	315	In stock	Enquiry
HD-GE-20S-UN-17	Fitting DIN 2353 GE 20S 1.1/16"-12 UN-UNF	-	400	In stock	Enquiry
HD-GE-22L-UN-17	Fitting DIN 2353 GE 22L 1.1/16"-12 UN-UNF	-	160	In stock	Enquiry
HD-GE-25S-UN-21	Fitting DIN 2353 GE 25S 1.5/16"-12 UN-UNF	-	400	In stock	Enquiry
HD-GE-28L-UN-21	Fitting DIN 2353 GE 28L 1.5/16"-12 UN-UNF	-	160	In stock	Enquiry
HD-GE-30S-UN-26	Fitting DIN 2353 GE 30S 1.5/8"-12 UN-UNF	-	400	In stock	Enquiry
HD-GE-35L-UN-21	Fitting DIN 2353 GE 35L 1.5/16"-12 UN-UNF	-	160	In stock	Enquiry
HD-GE-35L-UN-26	Fitting DIN 2353 GE 35L 1.5/8"-12 UN-UNF	-	160	In stock	Enquiry
HD-GE-38S-UN-30	Fitting DIN 2353 GE 38S 1.7/8"-12 UN-UNF	-	315	In stock	Enquiry
HD-GE-42L-UN-30	Fitting DIN 2353 GE 42L 1.7/8"-12 UN-UNF	-	160	In stock	Enquiry

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Fitting DIN 2353 screw-in, type GE-UN: 24° DIN 2353 socket with metric male thread and with UNF male thread (sealing an O-ring). Safety factor 4:1. Available as: L (series light), S (series heavy). Material: carbon steel, galvanized.