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Steel Adapter, 1-11-1/2 Female NPT To 1-5/8-12 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

Designed for demanding applications, the Eaton Aeroquip Steel Adapter offers a reliable connection between 1-11-1/2 Female NPT and 1-5/8-12 Male SAE O-Ring Boss (Straight Thread O-Ring). This adapter is crafted from durable steel, making it ideal for use in marine, military, chemical processing, pulp and paper industries, food and beverage processing, and offshore drilling. Its robust construction ensures longevity and performance under high-stress conditions.

The straight design of the adapter facilitates ease of installation in tight spaces, while the O-ring boss provides a secure seal, preventing leaks in hydraulic systems. With a catalog number of C1BC75, this adapter is a trusted choice for professionals seeking reliable hydraulic connections.

SKU: 2216-16-20S

Supplier Part Number (MPN): 2216-16-20S

Alternate Part Numbers: C1BC75, MI-00320312, MINO-00015F65805

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
1-1/4 in
Connection Size 2
1 in
Connection Type
FNPT, Male SAE ORB
Connection Type 1
Male SAE ORB
Connection Type 2
Female NPTF
Dimension Standards
SAE J1926
Dimensions
1 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40 to 250 deg F
Seal Material
NBR
Series
2216 Series
Thread Size
1-5/8-12 x 1-11-1/2

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Product Questions & Answers (1)

Question by: Dwayne T on Aug 21, 2025, 6:18 AM
Got a port on my hydraulic manifold that's tapped 1-5/8-12 SAE O-ring boss. Can I run a 1 inch NPT line straight into it with this fitting?
Answer by: Customer Support on Aug 23, 2025, 6:40 AM
That's exactly what this adapter is built for. One end is 1-11/2 female NPT, so your one inch pipe thread line connects right on. The other end is 1-5/8-12 male SAE O-ring boss, which threads directly into that port on your manifold. Straight configuration means no offset, just a clean in-line connection between the two thread types.

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