INDUSTRY COMPONENT

Backing Plate

A backing plate is a structural support component in sealing systems that provides rigidity and mounting stability for seals and gaskets.

View Specifications

Component Specifications

Definition
A backing plate is a critical component in industrial sealing systems, typically made from rigid materials, designed to support and reinforce flexible sealing elements like gaskets or O-rings. It prevents deformation under pressure, ensures proper seal compression, and maintains alignment between mating surfaces. In sealing systems, it serves as the foundation that distributes clamping forces evenly and protects seals from extrusion or blowout during operation.
Working Principle
The backing plate works by providing a rigid, flat surface against which a seal is compressed. When installed between flanges or housing components, it transfers clamping forces uniformly to the seal, preventing uneven compression that could cause leaks. Its structural integrity maintains seal geometry under varying pressures and temperatures, ensuring consistent sealing performance throughout operational cycles.
Materials
Typically carbon steel (ASTM A36), stainless steel (304/316), aluminum alloys (6061-T6), or engineered plastics (PEEK, PTFE) depending on corrosion resistance, temperature, and pressure requirements. Thickness ranges from 3mm to 25mm.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flatness0.05mm per 100mm
Surface FinishRa 3.2μm max
Pressure RatingUp to 3000 psi
Bolt Hole PatternASME B16.5 or custom
Temperature Range-40°C to 400°C
Thickness Tolerance±0.1mm

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 9001, ASME B16.5, DIN 2501

Parent Products

This component is used in the following industrial products

Sealing System

A critical component of the slot-die coating head that prevents coating material leakage and maintains precise gap control between the die lips.

View Product Details

Fendering System

A protective system installed on port tugs to absorb impact energy during docking, berthing, and towing operations.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Improper flatness causing uneven seal compression
  • Material incompatibility leading to corrosion
  • Insufficient thickness causing deflection under pressure
  • Incorrect bolt pattern causing misalignment
FMEA Triads
Trigger: Inadequate material selection for corrosive environment
Failure: Plate corrosion leading to seal support loss
Mitigation: Use corrosion-resistant materials (316 stainless, coated steels) and implement regular inspection protocols
Trigger: Exceeding pressure rating
Failure: Plate deformation causing seal extrusion
Mitigation: Design with safety factor (minimum 2:1), install pressure relief systems, and conduct pressure testing
Trigger: Improper installation torque
Failure: Uneven compression leading to localized leaks
Mitigation: Use calibrated torque wrenches, follow cross-tightening patterns, and verify with gap measurement

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Geometric tolerances per ASME Y14.5, flatness within 0.1mm/m²
Test Method
Dimensional verification with CMM, pressure testing per ISO 5208, material certification per ASTM standards

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 Backing Plate

3 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.

Powertech Auto Parts Co., Ltd.
Qingdao, Shandong, CN
Founded 1995
IATF 16949 ECE R90
Also makes: Brake Pad, Brake Lining, Brake Shoe and 4 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry
Zhongshan Safety Auto Parts Co., Ltd.
Zhongshan, Guangdong, CN
Founded 1991
IATF16949 TS16949 SAE J661 SAE J2521 +4
Also makes: Brake Pad, Brake Shoe, Brake Lining
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry
Yijing Brakes
Shandong, CN
Also makes: Brake Shoe, Automotive Components, Brake Pad
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

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

Related Components

Mounting Interface
Precision mounting interface connecting punch tips to pharmaceutical tablet press machines for accurate tablet production.
Chrome Plating
Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.
Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Frequently Asked Questions

What is the primary function of a backing plate in sealing systems?

The primary function is to provide rigid support for seals, preventing deformation under pressure and ensuring even compression distribution for reliable sealing.

Can backing plates be used with all types of seals?

They are commonly used with soft gaskets, O-rings, and composite seals that require support against extrusion, but may not be needed for metal-to-metal seals.

How do I select the right material for a backing plate?

Consider operating pressure, temperature, media compatibility, and corrosion requirements. Steel for high pressure, stainless for corrosion resistance, and plastics for chemical compatibility.

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.

Request Manufacturing Insight for Backing Plate

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
Armature Shaft Baffle Plate/Vanes
Get QuotesChat