Is the SAE 3000 Carbon Steel Locking Collar, Type E3 compatible with hydraulic systems operating at up to 100°C?

Yes. The SAE 3000 Carbon Steel Locking Collar, Type E3 is specified with an operating temperature range of -20°C to +100°C, so it is compatible with hydraulic systems operating at temperatures up to 100°C.

Can the SAE 3000 Carbon Steel Locking Collar, Type E3 be used with aggressive hydraulic fluids or only with standard mineral oils?

The SAE 3000 Carbon Steel Locking Collar, Type E3 is supplied with an NBR (nitrile) O-ring and a galvanized carbon steel body. NBR seals are generally compatible with standard mineral oils and many petroleum-based hydraulic fluids, so the collar is suitable for use with standard mineral oils. However, NBR has limited compatibility with aggressive hydraulic fluids (e.g., phosphate esters, some synthetic esters, certain biodegradable fluids, ketones, strong solvents, or fluids containing acids/alkalis); those can cause swelling, hardening, or loss of sealing properties. Therefore, do not assume compatibility with aggressive or specialty fluids without verification. If your system uses aggressive or non‑mineral hydraulic fluids, consult the fluid manufacturer’s compatibility data and consider using a seal material rated for those fluids (e.g., FKM/Viton, EPDM, HNBR, or PTFE) or a collar specified for such media.

SAE 3000 Carbon Steel Locking Collar, Type E3

All products, High-pressure adapters/

Additional information

Material	CS – steel (cast iron)

The SAE 3000 closing flange is a reliable solution designed for demanding hydraulic systems, ensuring secure and leak-free connections even under high pressure. Manufactured from durable carbon steel with a galvanized finish, it offers excellent resistance to wear, corrosion, and mechanical stress, guaranteeing long-lasting performance in industrial environments. Each flange is supplied complete with mounting screws and an NBR O-ring seal, providing a tight and dependable closure that minimizes downtime and maintenance costs. With an operating temperature range from -20°C to +100°C, this component delivers consistent functionality across a wide spectrum of applications, from heavy machinery to advanced hydraulic installations. Its robust construction and precise engineering make it an essential choice for professionals seeking efficiency, safety, and reliability in hydraulic system design.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HK-E3-08	SAE 3000 closing flange 1/2"	-	348	In stock	Enquiry
HK-E3-12	SAE 3000 closing flange 3/4"	-	348	In stock	Enquiry
HK-E3-16	SAE 3000 closing flange 1"	-	348	In stock	Enquiry
HK-E3-20	SAE 3000 closing flange 1.1/4"	-	278	In stock	Enquiry
HK-E3-24	SAE 3000 closing flange 1.1/2"	-	210	In stock	Enquiry
HK-E3-32	SAE 3000 closing flange 2"	-	210	In stock	Enquiry
HK-E3-40	SAE 3000 closing flange 2.1/2"	-	175	In stock	Enquiry
HK-E3-48	SAE 3000 closing flange 3"	-	138	In stock	Enquiry
HK-E3-56	SAE 3000 closing flange 3.1/2"	-	35	In stock	Enquiry
HK-E3-64	SAE 3000 closing flange 4"	-	35	In stock	Enquiry
HK-E3-80	SAE 3000 closing flange 5"	-	35	In stock	Enquiry

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The SAE 3000 closing flange is a reliable solution designed for demanding hydraulic systems, ensuring secure and leak-free connections even under high pressure. Manufactured from durable carbon steel with a galvanized finish, it offers excellent resistance to wear, corrosion, and mechanical stress, guaranteeing long-lasting performance in industrial environments. Each flange is supplied complete with mounting screws and an NBR O-ring seal, providing a tight and dependable closure that minimizes downtime and maintenance costs. With an operating temperature range from -20°C to +100°C, this component delivers consistent functionality across a wide spectrum of applications, from heavy machinery to advanced hydraulic installations. Its robust construction and precise engineering make it an essential choice for professionals seeking efficiency, safety, and reliability in hydraulic system design.