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Fitting Body Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

The fitting body is the main structural component of a compression fitting, designed to securely join tubing or pipes in fluid and pneumatic systems. It provides a leak-proof connection by compressing a ferrule against the tubing when tightened, creating a permanent mechanical seal without requiring welding or threading.

Working Principle

The fitting body works by housing a ferrule and nut assembly. When the nut is tightened onto the body, it forces the ferrule to compress radially onto the tubing, creating a tight seal between the tubing outer surface and the fitting body's internal taper. This compression creates both a mechanical grip and a fluid seal.

Materials

Typically made from brass, stainless steel (304/316), carbon steel, or plastic (PTFE, nylon). Material selection depends on application requirements including pressure, temperature, and fluid compatibility.

Technical Parameters

Tube Sizes 1/8" to 2" (3mm to 50mm)
Thread Types NPT, BSPP, BSPT, SAE
Surface Finish Ra 32 µin (0.8 µm) or better
Pressure Rating Up to 10,000 psi (690 bar)
Temperature Range -65°F to 450°F (-54°C to 232°C)

Standards

ISO 8434-1, DIN 2353, SAE J514

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fitting Body.

Parent Products

This component is used in the following industrial products

Compression Fitting

A mechanical fitting that creates a leak-tight seal by compressing a ferrule or sleeve onto a tube or pipe when tightened.

View Product Details

Engineering Analysis

Risks & Mitigation

Over-tightening can damage tubing
Improper tube preparation causes leaks
Material incompatibility with fluids
Vibration-induced loosening

FMEA Triads

Trigger: Improper installation torque
Failure: Leakage or tubing damage
Mitigation: Use torque wrenches and follow manufacturer specifications

Trigger: Vibration in system
Failure: Connection loosening over time
Mitigation: Use vibration-resistant designs with locking features

Trigger: Material fatigue
Failure: Cracking or fracture under cyclic loading
Mitigation: Regular inspection and replacement schedules

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.005 inches (±0.127mm) on critical dimensions

Test Method

Pressure testing per ISO 19879, helium leak testing, torque-to-failure testing

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between single ferrule and double ferrule compression fittings?

Single ferrule fittings use one ferrule that both seals and grips the tubing. Double ferrule fittings use two ferrules - the front ferrule creates the seal while the back ferrule provides the grip, offering better vibration resistance and reusability.

Can compression fitting bodies be reused?

The fitting body itself can typically be reused if undamaged, but ferrules should be replaced with each installation as they deform during compression to create the seal.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Fitting Body