Overview of Rubber Seal Hardness

-
Overview of Rubber Seal Hardness

Rubber seal hardness is a crucial performance indicator, directly impacting the sealing efficiency and service life. The hardness is typically measured using Shore hardness, with Shore A and Shore D being the most common scales. Shore A is used for softer rubber materials, while Shore D is applied to harder rubber and plastics.

Overview of Rubber Seal Hardness

Shore A Hardness

  • Range: Generally ranges from 0 to 100, with higher numbers indicating harder materials.
  • Application: Suitable for evaluating softer materials such as Nitrile Rubber (NBR), Fluoroelastomer (FKM), and Silicone Rubber (VMQ).
  • Typical Values:
    • Nitrile Rubber (NBR): 40A to 90A
    • Fluoroelastomer (FKM): 60A to 90A
    • Silicone Rubber (VMQ): 30A to 80A

Shore D Hardness

  • Range: Generally ranges from 0 to 100, with higher numbers indicating harder materials.
  • Application: Suitable for evaluating harder materials like some thermoplastic rubbers and rigid rubbers.
  • Typical Values:
    • Thermoplastic Rubber (TPR): 30D to 60D
    • Thermoplastic Polyurethane (TPU): 50D to 80D

Impact of Hardness on Sealing Performance

  • Low Hardness (Soft Rubber):
    • Advantages: Can accommodate larger deformations and irregular surfaces, making it easier to form an effective seal.
    • Disadvantages: Prone to extrusion under high pressure and has lower abrasion resistance.
  • High Hardness (Hard Rubber):
    • Advantages: Offers better abrasion resistance and anti-extrusion capabilities, ideal for high-pressure environments.
    • Disadvantages: Requires smoother surface finish and precise fitting, less adaptable to large deformations.

Hardness Testing Methods

  • Shore Hardness Tester: Measures material hardness by pressing a needle into the rubber surface.
  • Standards: Hardness testing is usually conducted following ASTM D2240 or ISO 7619 standards.

Selecting the Right Hardness for Rubber Seals

Choosing the right hardness for rubber seals involves considering several factors:

  • Operating Pressure: High-pressure conditions require harder rubber to prevent seal extrusion.
  • Operating Temperature: Different hardness materials perform differently under various temperature conditions.
  • Type of Medium: Different media have varying levels of corrosiveness, requiring appropriate material and hardness selection.
  • Assembly Conditions: If the assembly requires significant deformation, softer rubber should be chosen.

Contact Us

For more information about Overview of Rubber Seal Hardness,contact Nuoxutech at contact@nuoxutech.com or visit our website www.nuoxutech.com .You can also reach us on WhatsApp at +86 13849062209.Our team is ready to provide you with professional service and support.

Keywords: vacuum pump, vacuum system, nuoxutech, rubber seal hardness, Shore A, Shore D, NBR, FKM, VMQ, TPU, TPR

Comments

Post a Comment

Popular posts from this blog

The Characteristics of 2BV Liquid Ring Vacuum Pump

-
Image
NuoxuTech proudly presents the 2BV liquid ring vacuum pump, revolutionizing performance and versatility compared to SIHI LEM/LELC models. As a leader in industrial solutions, NuoxuTech continues to innovate with advanced technologies tailored to meet the evolving needs of various industries.   2BV VS SIHI LEM/LELC Key Characteristics of the 2BV Series: Expanded Model Range:   NuoxuTech offers a comprehensive range of models, including the 2BV5-161 and 2BV6-161, providing superior capacity compared to SIHI LEM pumps. Material Options:   Choose from multiple material options to suit diverse working environments: A. Cast iron material with stainless steel 304 impeller B. All stainless steel 304 material C. All stainless steel 316L material Compact Design:   The 2BV2 and 2BV5 models feature a bracket-free design, optimizing space utilization and streamlining assembly. Ease of Maintenance:   With the 2BV pump, the shaft remains isolated from the medium, facilitating hassle-free maintena
Read more

ZJP Series Roots Vacuum Pumps in the Chemical and Pharmaceutical Industries

-
Image
 In the highly demanding environments of the chemical and pharmaceutical industries, the need for reliable and efficient vacuum solutions is paramount. The ZJP Series Roots Vacuum Pumps from NuoXuTech are designed to meet these stringent requirements, offering robust performance and superior efficiency. This article delves into the applications, benefits, and technical specifications of the ZJP Series Roots Vacuum Pumps in these critical industries.   The Importance of Vacuum Technology in Chemical and Pharmaceutical Industries Vacuum technology is essential in various processes within the chemical and pharmaceutical industries, including distillation, drying, crystallization, and filtration. These processes often require precise control of vacuum levels to ensure product quality, safety, and process efficiency. Applications of ZJP Series Roots Vacuum Pumps 1. Distillation: Vacuum Level: Achieving high vacuum levels is crucial in distillation processes to lower the boiling point of su
Read more

Liquid Ring Vacuum Pumps Maintenance Guide

-
  Liquid ring vacuum pumps Maintenance Guide Maintaining Liquid ring vacuum pumps is an essential practice to ensure their long-term functionality and efficiency. In operating environments where these pumps are crucial, a systematic approach to maintenance can prevent unexpected downtime and costly repairs. Proper maintenance involves several key steps that you should carry out regularly. Regular Inspection Frequent visual inspections can help identify any irregularities or signs of wear and tear. Check for leaks, abnormal noises, or vibrations, as these may indicate issues such as seal failure or misalignment. Seal Integrity Seals are critical to the proper functioning of Liquid ring vacuum pumps. Inspect the seals periodically for any evidence of deterioration or leaks, and replace them according to the manufacturer’s recommendations or sooner if you notice damage. Bearing Lubrication Bearings are integral to the smooth operation of Li
Read more