MTA-BRLK-SSLK-RA-RB-Series

Supported Applications

The Omega OMEGALOK Adaptors, Fittings & Bushings series provides connection solutions for protection tubes and probes. The product line includes Standard Dimension adaptors, reducing bushings, compression fittings, metric thread adaptors, and Metric OMEGALOK® Compression Fittings designed to convert imperial and metric threads.

Operating Conditions & Performance

The series is constructed from brass, stainless steel (316 SS), and carbon steel. Specific dimensional parameters vary by model; for example, the "ADAPTORS AND BUSHINGS" table lists lengths ranging from 1.09 inches to 2.16 inches with across hex flats between 7/8 inch and 1 5/8 inches depending on thread size. The "OMEGALOK® COMPRESSION FITTINGS" table specifies protection tube outer diameters (OD) from 1/16 inch to 1/2 inch, with lengths ranging from 24.6 mm (0.97 inch) to 49.3 mm (1.94 inch). Metric OMEGALOK® Compression Fittings support protection tube ODs of 3.0 mm, 4.5 mm, 6.0 mm, and 8.0 mm.

Configuration Options

The series supports a wide range of configurations across four primary product families:

• Adaptors and Bushings (RA/RB Series): Includes reducing adaptors with NPT male/female threads ranging from 1/8 to 1 inch, and reducing bushings. Materials include brass (-BR), stainless steel (-SS), and carbon steel (*-CS) for larger sizes such as the RB-114-34-CS*.
• OMEGALOK® Compression Fittings (BRLK/SSLK Series): Designed for protection tube ODs from 1/16 to 1/2 inch with male NPT threads. Available in brass and 316 stainless steel.
• Metric Thread Adaptors (MTA Series): Converts between Female NPT, Male BSPT* (ISO 228/1, BS 2779), and other thread types. Models include MTA1 through MTA4 series with sizes from 1/8 to 1 inch.
• Metric OMEGALOK® Compression Fittings: Supports metric protection tube ODs (3.0 mm, 4.5 mm, 6.0 mm, 8.0 mm) connecting to NPT threads or BSP Taper/Parallel threads (BSPT/BSPP).

Ferrules: Replacement ferrules are available in packages of 10 for tube ODs from 1/16 to 1/2 inch. Materials include brass, stainless steel, and PTFE.

Key Product Differences

Variants differ by material composition, thread standard, and protection tube compatibility:

• Material Options: Models are designated as Brass (-BR), Stainless Steel (316 SS or -SS), Carbon Steel (*-CS*), or PTFE. Note that PTFE ferrules can only be used with stainless steel compression fittings.
• Thread Standards: The series covers NPT, BSPT* (ISO 228/1, BS 2779), and BSP Parallel threads. Metric thread adaptors facilitate conversion between these standards.
• Model Numbering: Model numbers encode the function and material; for example, BRLK-14-14 indicates a brass compression fitting for 1/4 inch OD tubes with 1/4 NPT threads, while SSLK-M30-18T denotes a stainless steel metric OMEGALOK® fitting for a 3.0 mm tube with BSPT thread.