Is the 90° SAE 3000 Weld Flange, Carbon Steel, Type D3 compatible with standard SAE 3000 hose assemblies and fittings?

Yes. The 90° SAE 3000 Weld Flange, Carbon Steel, Type D3 is designed to be compatible with standard SAE 3000 hose assemblies and fittings. Its precise SAE 3000 specification, compact welded socket construction and included NBR O‑ring ensure correct sealing and mechanical fit with industry-standard SAE 3000 components. Made from durable carbon steel and supplied as a complete set with mounting screws, it integrates reliably into typical SAE 3000 hydraulic systems and performs across the standard operating temperature range (-20°C to +100°C).

Can the 90° SAE 3000 Weld Flange, Carbon Steel, Type D3 withstand repeated thermal cycling between -20°C and +100°C without seal degradation?

Yes. The 90° SAE 3000 Weld Flange, Carbon Steel, Type D3 is engineered to operate across the stated temperature range of -20°C to +100°C and is supplied with an NBR O-ring designed for reliable sealing within that range. Carbon steel construction provides dimensional stability through repeated thermal cycles typical for hydraulic systems, and the robust welded socket plus complete mounting hardware support consistent clamping and flange alignment—both important to prevent seal extrusion or misalignment during cycling. However, long-term seal life under repeated thermal cycling depends on cycle frequency, pressure, chemical exposure, and mechanical stress. NBR performs well between -20°C and +100°C for many hydraulic fluids but can harden or swell over time with aggressive fluids, ozone, or prolonged high-temperature exposure near the upper limit. For high-frequency cycling, aggressive media, or operation repeatedly at extremes, consider verifying compatibility with your specific fluid and duty cycle or selecting a higher-performance elastomer (e.g., FKM/Viton) for improved resistance. In summary: the flange and supplied NBR O-ring are suitable for repeated cycling between -20°C and +100°C in typical hydraulic conditions, but validate fluid compatibility and duty-cycle specifics for optimal long-term seal performance.

90° SAE 3000 Weld Flange, Carbon Steel, Type D3

All products, High-pressure adapters/

Additional information

Material	CS – steel (cast iron)

The 90° SAE 3000 flange connection is a robust and space-saving solution designed for demanding hydraulic applications, offering a compact construction with a practical socket for welding. Manufactured from high-quality carbon steel, it ensures durability and long-lasting performance even under intensive operating conditions. The flange is supplied as a complete set, including mounting screws and a reliable NBR O-ring seal, guaranteeing secure installation and leak-free operation. Engineered to perform within a wide temperature range from -20°C to +100°C, it provides consistent efficiency and safety across diverse environments. Its precise design supports optimal system integration, making it an excellent choice for professionals seeking dependable hydraulic connections that combine strength, reliability, and ease of assembly.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HK-D3-SA-90-08-21	90° flange fitting SAE 3000 1/2", for welding 21.6 mm	-	348	In stock	Enquiry
HK-D3-SA-90-12-27	90° flange fitting SAE 3000 3/4", for welding 27.2 mm	-	348	In stock	Enquiry
HK-D3-SA-90-16-34	90° flange fitting SAE 3000 1", for welding 34.1 mm	-	348	In stock	Enquiry
HK-D3-SA-90-20-42	90° flange fitting SAE 3000 1.1/4", for welding 42.8 mm	-	278	In stock	Enquiry
HK-D3-SA-90-24-48	90° flange fitting SAE 3000 1.1/2", for welding 48.6 mm	-	210	In stock	Enquiry
HK-D3-SA-90-32-61	90° flange fitting SAE 3000 2", for welding 61 mm	-	210	In stock	Enquiry
HK-D3-SA-90-40-76	90° flange fitting SAE 3000 2.1/2", for welding 76.6 mm	-	175	In stock	Enquiry

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The 90° SAE 3000 flange connection is a robust and space-saving solution designed for demanding hydraulic applications, offering a compact construction with a practical socket for welding. Manufactured from high-quality carbon steel, it ensures durability and long-lasting performance even under intensive operating conditions. The flange is supplied as a complete set, including mounting screws and a reliable NBR O-ring seal, guaranteeing secure installation and leak-free operation. Engineered to perform within a wide temperature range from -20°C to +100°C, it provides consistent efficiency and safety across diverse environments. Its precise design supports optimal system integration, making it an excellent choice for professionals seeking dependable hydraulic connections that combine strength, reliability, and ease of assembly.