Permeability or permeation of gases through an O-ring varies by material type; material hardness; degree of squeeze; presence or absence of lubrication; size of O-ring cross section; and the pressure, temperature and type of gas being sealed. Typically, harder compounds containing more carbon black feature lower diffusion rates.
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The durometer has a calibrated spring which forces an indent or point into the test specimen against the resistance of the rubber. The indicating scale reads the hardness of the rubber. ... Referring back to the O-ring seal diagrams, as shown below, it can be seen that a harder O-ring will have greater resistance to extrusion into the narrow ...
The durometer scale runs numerically from 0-100, with lower numbers indicating softer materials and higher numbers for harder materials. There are two main shore hardness scale categories, each indicating a different type of material. A Shore scale measures a wide range of materials, from the very soft to the hard and semi-rigid materials.
Durometer scales run numerically from 0-100, with lower numbers indicating softer materials and higher numbers for harder materials. Durometer is just shorthand for "Shore hardness". How is O-Ring Durometer Measured? O-Ring durometer is measured by the depth of indentation in the material created by a given force using a standardized pressure foot.
The hardness of rubber o-ring compounds are measured by the Shore A durometer; the higher the durometer, the harder the compound. 70-durometer hardness should be used whenever possible as it offers the best combination of properties for most o-ring applications. Durometer Shore A scale is a type of measurement for rubber material hardness.
Some of these include: PEEK. Carbon PEEK. MT. Nylon. These thermoplastic rings are made using lathes, mills and only with the latest in technology. Because of the method in which they are created, profile rings are able to work exceptionally well, even into extremely high temperatures.
The Analog Complete O-Ring Hardness Kit is the most convenient and accurate way to perform repeatable hardness (durometer) testing on thin materials - as thin as .030" *. The OTK-AN is comprised of the following items: Model RX-1600-M - Type M Analog Durometer with Certification. ORF-1 - O-Ring Fixture Kit (1/16, 3/32, 1/8, 3/16, 1/4)
Viton®/FKM O-rings 90. Viton®/FKM O-rings 90 Durometer are heat resistant up to 400*F and higher temperatures with shorter life. Cold flexibility down to -15*. FKM 90 Durometer is preferred over 75 Durometer when the application has pressure ratings of 3000 psi or higher. Sort By:
Normally durometer hardness is referred to in increments of five or ten, as 60 durometer, 75 durometer, etc. - not as 62 durometer, 66 durometer or 73 durometer. This practice is based on: (1) The fact that durometer is generally called out in specifications with a tolerance of ±5 (i.e., 65±5, 70±5, 90±5);
Nitrile 75 Durometer O-Ring Mil/Aero (NM756-75) | Product Series Filter. Filter by Clear All No filters selected. Get your Parker account Today! Create one account to manage everything you do with Parker, from your shopping preferences to your application access. ... Contact Parker O-Ring Division at 859-269-2351 for design and pricing ...
Specialist Sealing Products are the leading supplier of o rings and seals throughout Leeds, Yorkshire, and beyond. We offer a range of o-rings and sealing products suitable for various applications operating across different industry sectors. To find out more about o ring durometer and how we can help you, call 01535 274 776.
Low Durometer O-Ring . The simple solution to lowering the compressive load of an O-ring is to switch to a softer O-ring material. Changing to a softer durometer material can result in up to 50% reduction in the force needed to compress an O-ring. For example, with a .070" cross sectional thickness, a 90 durometer O-ring compressed 20% needs ...
JD 3020, JD 4230, JD 7410, JD 2440, MF 750, NH LS170. Depends on the application. In some applications the 90 Durometer o-ring would be better. I actually have 5 kits. Standard Buna-N 70 Durometer kit, Viton 75 Durometer kit, Buna-N 90 Durometer hydraulic tube kit, Metric Buna-N 70 Durometer kit, Neoprene Air Conditioning kit and a Quad-Seal ...
Sold in bags of 100, Qosina part #13040 (AS-017) is a bulk, non-sterile EPDM O-ring defined by its o-shape and circular cross section. With an 11/16 inch inner diameter, 13/16 outer diameter and 1/16 inch cross... [See More] O-ring Hardness …
The hardness of rubber compounds is measured by the Shore A durometer; the higher the durometer, the harder the compound. 70-durometer hardness should be used whenever possible as it offers the best combination of properties for most O-Rings applications. Softer compounds stretch easier and seal better on rough surfaces. Harder compounds offer greater …
Durometer 40A: Durometer 50A: Durometer 55A: Durometer 60A: Durometer 64A: Durometer 65A: Durometer 70A: Durometer 75A: Durometer 80A: Durometer 85A: Durometer 90A: Durometer 95A: ... Water-Resistant Soft Neoprene O-Ring Cord Stock. This soft cord stock creates a better seal in low-pressure applications that standard neoprene cord stock.
A neat test is to put the o-ring in question on a flat surface and place a piece of glass, or an old magnifier lens if it happens to be the first clear, hard thing you find atop the o-ring. Add a weight with a hole in the middle so you can see how wide the "contact patch" of the o-ring deforms. Then try the other hardnesses.
O-Ring Installation Compressive Load vs Hardness Chart .070 Diameter O-Ring Table. General Engineering Menu O-Rings Suppliers Molded O-Rings Services. The following chart gives the load required to compress a .070 diameter o-ring with respect to percent compression of diameter and the applicable hardness - Shore A scale.
O-Ring Design Guide. HITECHSEALS 3 Compound Specification Guide Prefix Material Duro. Temperature Range Description N70 Nitrile 70 ± 5-40°C to 120°C ... Generally used for higher pressures than the 70 durometer materials, while having comparable media resistance. LTN Nitrile 70 ±5-54°C to 120°C
AS568 and ISO 3601 standard sizes. Hardness range from 10 to 90 Shore A durometer. 8,000 different non-standard sizes. MicroOrings ® for inner diameters less than 0.036" or 1 millimeter. Provide USA made product upon request. We can assure immediate delivery of most sizes in large or small quantities.
The non-standard O-Ring sizes are fabricated to the exact specifications of our customers from the variety of cord sizes available and in stock. We also vulcanize extrusions, non–stock materials & sizes are available by special order. ... Nitrile 90 Durometer (HB90) Fluoroelastomer 90 Durometer (VBU90) Leather (Cut for Series 6244 & Series ...
How Do You Measure Shore Hardness. The Shore Scale was created by Albert Shore back in the 1920s. He was a metallurgist and is credited as the founder of the durometer, which is the instrument used to measure Shore hardness.A durometer gauge is used to measure Shore hardness and is a relatively simple device. It contains a spring-loaded steel rod that …
Features: Model DD-4-M – Type M Durometer with Certification. Model OS-3 – Air Dampened Operating Stand. Model ORF-1 – O-Ring Fixture Kit. Model TBK-M Type M Test Block Kit with Certification. Add to cart.
Use our o-ring size chart and calculator to find the AS568 or metric sizing of standard size HNBR, Viton, and other o-rings. Go to Navigation Go to Content. Request A Quote Contact Us. Call Us | 303.777.7024. Menu. Products. O-Rings. Standard O-Rings; Metric O-Rings; Quad Rings; Square Cut O-Rings; Back-up Rings; Cord Stock;
the O-ring, causing friction and heat. Because rubber is a poor conductor of heat, the O-ring can loose its proper-ties. To minimize or reduce wear, the following could be done; however consult the local ERIKS representative: • confirm amount of squeeze. • use the smallest possible cross section. • select an O-ring with internal lubri-
Shore Hardness Testing and Scales. An o-ring's durometer is the measurement of that specific material's hardness. This scale is also measured by an instrument called a durometer gauge, which uses a spring-loaded rod to indent the material and provide a reading. The durometer scale runs numerically from 0-100, with lower numbers indicating ...
The hardness of rubber compounds is measured by the Shore A durometer; the higher the durometer, the harder the compound. 70-durometer hardness should be used whenever possible as it offers the best combination of properties for most O-Rings applications. Softer compounds stretch easier and seal better on rough surfaces.
ORDER ONLINE. ORDER ONLINE. Any O-Ring size, O-Ring material, O-Ring durometer, O-Ring color, O-Ring brand. Parker O-Rings, KALREZ ® O-Rings, VITON ® O-Rings, MARCO RUBBER O-RINGS available. Simple and robust selection and ordering tools to step through the selection process with responsive service. Worldwide O-Ring inventory network ...
Buna-N Nitrile O-Rings (NBR) Buna-N O-Rings / Nitrile O-Rings / NBR: Buna-N o-rings also referred to as NBR o-rings and Nitrile o-rings are the most widely used o-ring material in the world because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems ...
Some classes of materials that are suitable for o-rings for vacuum service include Nitrile (Buna-N), Fluorocarbon (Viton), Ethylene Propylene (EDPM), Perfluoroelastomer (FFKM, Kalrez) and silicone rubbers. Some common classes of materials are listed in Table 1. Table 1. Classes of o-ring materials. To compare the outgassing characteristics of ...
Compared to durometer, modulus is a better measurement of stiffness. Yet stiffness and modulus aren't precisely the same. Modulus is a property of the constituent material, such as EPDM or silicone rubber. Stiffness is a property of the rubber product's structure, such as a round cord or square shape. This can add to the confusion ...
Available in standard black. 70 durometer. FFKM O-Ring Material. A family of perfluoroelastomer compounds that provides excellent chemical, heat, oil and abrasion resistance. Offered in three resin options with temperature resistance up to 392-572°F/200-300°C. This material is used in applications that involve repeated or prolonged contact ...
The hardness of rubber compounds is commonly measured by the Shore 'A' durometer; the higher the durometer number, the harder the compound. 70-durometer hardness should be used wherever possible as it offers the best combination of properties for most O-Ring applications. Softer compounds stretch easier and seal better on rough surfaces.
