Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings

Custom Designed Bi-Directional Seals For Medical Applications

By Frank Tobe | April 28, 2014

Share

MinnesotaRubberCustom designed bi-directional seals from Minnesota Rubber and Plastics are ideal for a broad range of fluid delivery applications including medical and dental devices. Bi-Directional seals greatly improve fluid delivery systems by handling opposing pressures while preventing leakage.

Minnesota Rubber and Plastics (MR&P) unique double-lip seal solution ensures proper seal function in two directions. The seal works with an alternating motion, similar to the squeegee effect of a windshield wiper blade. The lip facing up contains downward fluid pressure. The lip facing down contains the upward fluid (negative) pressure.

Minnesota Rubber and Plastics’ expertise in material formulation and compounding contributes significantly to the effectiveness of these double lip seals. For example, to ensure the double lip seals are molded to very tight tolerances, MR&P analyzes the relationship between different materials, their properties, how processing changes them and how the materials will perform in an application. For certain medical applications, MR&P uses specially formulated EPDM (Ethylene Propylene Diene Monomer) compounds. Formulated and molded to ensure low leachables and extractables, these seal materials are compatible with a wide range of fluids prescribed for administration through IV systems.

Another important factor in double lip design is the seal size. To reduce potential for leaks, smaller seal sizes are often preferred. MR&P designs double lip seals as small as .046 OD, .140 ID and .145 (inch) thickness. Critical surface dimensions for these small sizes are: ID +/-.004, OD sealing diameter dimension (.295) held to +/-.005. Sealing thickness is held to +/-.005. To achieve these accuracies, MR&P utilizes state-of-the-art transfer molding systems that ensure repeatable quality.

Minnesota Rubber and Plastics
www.mnrubber.com


Filed Under: TECHNOLOGIES + PRODUCTS, Materials • advanced, Seals
Tagged With: minnesotarubber
 

Tell Us What You Think!

Related Articles Read More >

50 years of bit parallel encoders from POSITAL
EXAIR 3D model and CAD Library has more than 70 extensions
New igus E4.1R rol e-chain reduces noise, vibration and saves electricity
55417-edgeConnectoren_V3.0_05-2022_cmyk_300dpi
edgeConnector product family from Softing now include a REST API

DESIGN GUIDE LIBRARY

“motion

Enews Sign Up

Motion Control Classroom

Design World Digital Edition

cover

Browse the most current issue of Design World and back issues in an easy to use high quality format. Clip, share and download with the leading design engineering magazine today.

EDABoard the Forum for Electronics

Top global problem solving EE forum covering Microcontrollers, DSP, Networking, Analog and Digital Design, RF, Power Electronics, PCB Routing and much more

EDABoard: Forum for electronics

Sponsored Content

  • Global supply needs drive increased manufacturing footprint development
  • How to Increase Rotational Capacity for a Retaining Ring
  • Cordis high resolution electronic proportional pressure controls
  • WAGO’s custom designed interface wiring system making industrial applications easier
  • 10 Reasons to Specify Valve Manifolds
  • Case study: How a 3D-printed tool saved thousands of hours and dollars

Design World Podcasts

May 17, 2022
Another view on additive and the aerospace industry
See More >
Engineering Exchange

The Engineering Exchange is a global educational networking community for engineers.

Connect, share, and learn today »

Design World
  • Advertising
  • About us
  • Contact
  • Manage your Design World Subscription
  • Subscribe
  • Design World Digital Network
  • Engineering White Papers
  • LEAP AWARDS

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings