RS PRO Nitrile Rubber O-Ring, 1mm Bore, 4mm Outer Diameter

RS Stock No.:

Technical Reference

Legislation and Compliance

RoHS Certificate of Compliance

RS Components
RoHS Certificate of Compliance

EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.

Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.

RS definition of RoHS Compliance:

  • The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
  • and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering

The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:

PBB (Polybrominated Biphenyls)0.1%
PBDE ( Polybrominated Diphenyl Ethers)0.1%
Hexavalent Chromium0.1%
DEHP (Bis (2-Ethylhexl) phthalate)0.1%
BBP (Benzyl butyl phthalate)0.1%
DBP (Dibutyl phthalate)0.1%
DIBP (Diisobutyl phthalate)0.1%

The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".

RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.

Compliant Product Details
RS stock number 1965458
Product description RS PRO Nitrile Rubber O-Ring, 1mm Bore, 4mm Outer Diameter
Manufacturer / Brand RS PRO

RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 1965458
Product description RS PRO Nitrile Rubber O-Ring, 1mm Bore, 4mm Outer Diameter
Manufacturer / Brand RS PRO

The foregoing information relates to product sold on, or after, the date shown below.


Date May 20, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Product Details

'O' Rings

'O' ring seals available in a choice of three materials to suit different applications. All 'O' rings are supplied in bags of 50. The Nitrile 'O' rings are available in both Metric and Imperial sizes. Imperial sizes are to BS1806, Metric sizes are to BS4518.

RS PRO Metric Nitrile 70 ShA O-Rings

Introducing the range of RS PRO Nitrile O-Rings, ideal for use as seals for pumps, drive belts, and other general engineering applications in the hydraulic and pneumatic industry. This O-ring is manufactured from Nitrile rubber (NBR), which is a cost-effective material and is great for applications where the O-ring is exposed to fats, greases and vegetable oils. With a variety of metric and imperial sizes available to suit a wide range of applications, the O-ring also offers long life and good chemical resistance to most hydrocarbons, oils and fuels to aid optimum performance for the life of the O-ring.

Features and Benefits:

  • This range of RS PRO O-rings are versatile seals that can be used as shaft seals, face to face seals, as well as facilitating rotary and linear movement

  • The nitrile material is hardwearing with excellent resistance to chemicals and provides optimum performance and a long-lasting seal life

  • Operating temperature range: -30°C to 90°C

  • Ideal for use as seals for pumps, drive belts, and other general engineering applications in the hydraulic and pneumatic industry

  • Available in a wide range of metric and imperial sizes


An O-ring is a type of round or donut-shaped seal and is most commonly used to stop fluids or air passing through into another area. O-rings are normally seated between two sections and when compressed, they form a secure seal that prevents particle, vapour and fluid leakage which in turn protects and maintains pressure whilst keeping debris out, ensuring proper function and safety. They come in different sizes and materials, depending on the application they are used for, so it is important to consider what materials and fluids are going to be in contact with the seal to ensure it is the right one. These seals or gaskets are most commonly used in:

  • Industrial and manufacturing applications

  • Plumbing

  • Hydraulics and pneumatics

  • Automotive manufacturing and repair

  • Power transmission technology

How long does an O-Ring last for?

If the O-ring is used in the correct conditions for the material, NBR O-rings can last for up to 15 years


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

These Nitrile O-rings are not compatible with:

  • Ozone

  • Esters

  • Retones

  • Aldehydes

  • Chlorinates

  • Nitro Hydrocarbons


Attribute Value
Brand RS PRO
Minimum Operating Temperature -30 °C
Thickness 1.5 mm
Material Nitrile Rubber
Type O-Ring
Maximum Operating Temperature +90 °C
Outside Diameter 4 mm
Inside Diameter 1 mm
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Price Bag (1 Bag of 50)You save IDR 11,013.45 (17%)
Bag(s)Per Bag(IDR)Per Unit(IDR)
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