O-Ringe
O-ringe rangerer som de mest anvendte tætninger på grund af deres effektivitet, overkommelige pris og pålidelighed.
Hos M Seals specialiserer vi os i at levere skræddersyede tætningsløsninger, der opfylder alle typer krav, uanset om de er til statiske eller dynamiske formål. Vores udvalg inkluderer den alsidige O-ring, et eksempel på vores evne til at tilbyde enkle og effektive tætningsmuligheder, der kan bruges både uafhængigt og i kombination med andre tætningskomponenter.
O-ringe - simple og alsidige tætninger
Den alsidige og enkle konstruktion af O-ringen gør den til den foretrukne tætningstype verden over og den bruges i alle industrielle sektorer. O-ringe fås i et bredt udvalg af materialer og størrelser. De kræver begrænset plads og er nemme at installere. Dette resulterer i en bred vifte af anvendelser og kan opfylde ethvert specifikt behov og applikationskrav, uanset driftsmiljø og designkrav.- Omkostningseffektiv og simpel løsning
- Bruges i både dobbeltvirkende og dynamiske applikationer
- Egnet til en bred vifte af anvendelser
- Fås i mange materialer og størrelser
- Nemme at installere og vedligeholde, kræver ingen specialværktøj
Standardtyper og drejede emner
Hos M Seals tilbyder vi et bredt udvalg af tætninger i forskellige materialer og i mange størrelser. Vores nuværende lager på over 80.000 O-ringe fordelt på 10.000 individuelle størrelser sikrer, at vi kan være konkurrencedygtige for både de største og mindste forespørgsler.
Ud over vores standardtætninger, specialiserer vi os i skræddersyede tætningsløsninger, designet til at imødekomme unikke krav med specifikke dimensioner, herunder fjederaktiverede tætninger og andre avancerede løsninger, der er ideelle til komplekse applikationer. Vi forstår vigtigheden af at imødekomme specifikke behov, og vores ekspertise gør os i stand til at udvikle innovative tætningsløsninger, der sikrer optimal ydeevne og pålidelighed i enhver situation.
Levering af merværdi
M Seals er udstyret med CNC-maskiner in-house, hvilket muliggør skræddersyet design og hurtig produktion af specialtilpassede tætninger. Vi tilbyder samme dags afsendelse for vores ingeniørmæssige tætninger samt alle lagerartikler, hvilket garanterer, at hvert produkt opfylder strenge kvalitetsstandarder og ankommer til tiden. For ikke-lagerførte varer er vi forpligtet til at skaffe dem hurtigt, hvilket sikrer de kortest mulige leveringstider.
Derudover tilbyder vi forsyningssikkerhed med en lageraftale. Hvis din virksomhed har et regelmæssigt behov for en bestemt mængde tætninger, kan du indgå en lageraftale med M Seals. Dette sikrer, at et minimumslager altid er tilgængeligt, hvilket giver dig forsyningssikkerhed til kritiske produktioner eller hastesager.
Få rådgivning om design og konstruktion
Vi stiller vores omfattende erfaring til rådighed og vores team er klar til at have en tæt dialog om den optimale tætningsløsning til din specifikke opgave. Udover at tilbyde rådgivning, designer og producerer vi skræddersyede løsninger fra vores omfattende udvalg af gummimaterialer.O-Ring FAQs
O-Ring Sizing & Standards
To identify the right O ring size, measure the following key dimensions: Inside Diameter (ID), Outside Diameter (OD) and Cross Section (CS). Then refer to our BS O ring size guide to find the correct standard size. If your o-ring is not a standard size, we can produce custom o-rings – contact us for technical support.
No. An o-ring’s performance relies on a perfect fit within the groove. An incorrect fit, whether too big or too small will not create a tight seal and may lead to extrusion or leakage.
Different countries use a different standard of measurement, so in global supply chains, it is important to know the correct size for the application. Metric O-rings are measured in millimetres (mm) and often follow standards DIN 3771 or ISO 3601. Imperial O-rings are measured in inches (in) and follow American standards, most commonly AS568.
Materials & Performance
Material selection depends on the application, taking into account chemical compatibility, operating temperature, sealing pressure, environmental conditions etc. Common materials for o-rings include Nitrile (NBR), Viton™ (FKM), EPDM, Kalrez® /FFKM, HNBR, Silicone and PTFE. If you need advice on the best o-ring material for your application, please refer to our material data sheets or contact us.
The temperature an o-ring can withstand depends on the material it is manufactured from. For each material, the upper and lower limits are dependent on the specific material grade. As a guide:
- Nitrile: up to ~100°C
- Viton® (FKM): up to ~200°C
- EPDM: up to ~150°C
- Kalrez: up to ~325°C
- HNBR: up to ~150°C
- Silicone: up to ~200°C
- PTFE: up to ~300°C For advice on the best material for high temperature applications, please contact us.
Standard O-rings typically hold up to 1,500 psi, but using specialised materials and back-up rings, they may be able to handle pressures exceeding 10,000 psi.
Yes, the colour of an o-ring often identifies the material compound, its durometer, temperature and chemical resistance. Whilst there is not a universal standard, common o-ring colours are:
- Black - NBR/Buna-N or EPDM
- Green - Viton/FKM or HNBR
- Brown - Viton/FKM
- Blue - Fluorosilicone/Metal Detectable
- White/Transparent - Silicone or PTFE
- Yellow - PTFE
- Purple - FFKM
Design, Selection & Application
The ideal durometer for an O-ring depends on factors such as system pressure, installation constraints and the amount of movement within the application. In most general purpose situations, both static and dynamic, a 70 Shore A O ring provides the best balance of flexibility and durability. For low pressure systems or applications involving delicate components, a softer compound in the 40–60 Shore A range is usually more appropriate. On the other hand, high pressure, high temperature, or extrusion prone environments require a harder material, making a 90 Shore A durometer the preferred choice. If you are unsure, we can advise on the best durometer for your needs.
Yes. We can supply o-rings in a range of materials compliant for food or medical applications, including EPDM, Silicone (VMQ), FKM (Viton®), NBR, PTFE and Metal Detectable.
Yes, lubrication (using grease or oil) is necessary to reduce friction which prevents damage to the O-ring during installation and use. It also helps to create a tighter seal. You can apply lubricant to the seal using your fingers or a brush, or you can dip the O-ring into a container of lubricant. Be sure to fully cover the O-ring for proper lubrication.
Installation, Maintenance & Lifespan
The most common causes of O-ring failure are abrasion, caused by rough or improper finishing of the contact surface, compression set, chemical incompatibility, wrong material choice or improper installation. Choosing the right material and proper installation greatly extends service life. If you need our assistance with this, please contact us.
Although it is dependent on environment and material, the average shelf-life ranges from 5 to 20 years if stored correctly.
Storage conditions can affect the shelf life of o-rings so they should be stored in a cool, dry place, avoiding exposure to UV light, moisture and ozone. Store them away from direct heat sources, electric motors, or contaminants like solvents and oils.
O-ring maintenance schedules vary significantly depending on application, environment and material. Seals should be included in your scheduled equipment service, whatever that may be for your industry or application.
It is time to replace seals when you notice visual signs like cracks, nicks or hardening, or if there is leakage.
Custom Solutions
Yes. In addition to standard seals, we specialise in custom manufactured sealing solutions, designed to meet unique requirements for complex applications. We design and manufacture in-house, so have complete control over the process.
Ordering & Delivery
Please contact our sales team or order on our webshop.
For stock items, we will ship them same day for next day delivery. For non-stock items, we are committed to obtaining them promptly, ensuring the shortest possible lead times.
