Metal Case: Temperature Range -40°C to +150°C

Component Specifications

Definition

A precision-engineered metal housing component designed to encase and protect the sealing elements of a propeller shaft seal assembly. It serves as the primary structural interface between the seal and the surrounding mechanical system, ensuring proper alignment, retention, and protection against external contaminants while withstanding operational stresses including vibration, thermal cycling, and mechanical loads.

Working Principle

The metal case functions by providing a rigid, dimensionally stable enclosure that securely positions the sealing lip or element against the rotating shaft. It transfers mounting forces evenly, maintains seal geometry under pressure, and acts as a barrier against dirt, moisture, and debris. Its design ensures consistent contact pressure and alignment to prevent leakage and premature wear.

Materials

Typically manufactured from cold-rolled steel (CRS), stainless steel (grades 304 or 316 for corrosion resistance), or aluminum alloys (e.g., 6061-T6 for lightweight applications). Surface treatments may include zinc plating, phosphate coating, or powder coating for enhanced durability and corrosion protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 HRB for steel
Outer Diameter	50-200 mm (varies by application)
Wall Thickness	1.5-3.0 mm
Pressure Rating	Up to 10 bar static
Temperature Range	-40°C to +150°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 6194, DIN 3760

Parent Products

This component is used in the following industrial products

Propeller Shaft Seal

A sealing component that prevents water ingress and lubricant leakage around the propeller shaft where it exits the steering pod.

View Product Details

Engineering Analysis

Risks & Mitigation

Corrosion in harsh environments
Fatigue cracking under cyclic loads
Improper fit leading to seal failure

FMEA Triads

Trigger: Material degradation due to corrosion
Failure: Loss of structural integrity and seal misalignment
Mitigation: Use corrosion-resistant materials and protective coatings

Trigger: Excessive vibration or impact loads
Failure: Cracking or deformation of the case
Mitigation: Design with adequate wall thickness and stress relief features

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions

Test Method

Dimensional inspection per ISO 286, pressure testing, and salt spray testing per ASTM B117

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Metal Case

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

MORNSUN

Guangzhou, Guangdong, CN

Also makes: Industrial Power Supply Unit, DC-DC Converter, Transceiver Module and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “1-phase Metal case (75-960W)”
View source page ↗ mornsun-power.com · checked 2026-08-26

View profile Send enquiry

Nanjing Geekung Hydraulic Machinery Co., Ltd.

Nanjing, Jiangsu, CN

Also makes: Silicone Injection Molding Machine, Injection Molding Machine, Hydraulic Press Brake and 1 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Metal Case Machining”
View source page ↗ geekungpress.com · checked 2026-09-03

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a metal case in a propeller shaft seal?

It provides structural support, ensures proper seal alignment, and protects internal sealing elements from environmental damage and mechanical stress.

Can metal cases be customized for different shaft sizes?

Yes, they are often custom-engineered to match specific shaft diameters, mounting configurations, and environmental requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Metal Case