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Supporting British and global aerospace

Aerospace component solutions from SBR are trusted to deliver quality and certification with the highest British and global standards

SBR is a lean, agile and customer focused manufacturer of mouldings and extrusions.  Using the highest quality rubber and silicone, we deliver components into aerospace verticals with approval to AS9100D.

Performance excellence is a key benefit of our rubber parts and extrusions.  However, we understand the commercial realities and the demands placed upon our customers to deliver more for less. 

SBR ensure enterprise and expertise is delivered without compromising quality



"We are in the aerospace and defence industry, so our customers expect top quality parts,
kept to a promised lead time. Southbourne are very reliable on both of these points"

Elastomeric materials specifically designed for aerospace applications

Whether a fixed or rotary wing aircraft, we supply a wide component range for military and commercial sectors

We offer components in a range of elastomeric materials specifically for the aerospace applications and industry.  These enable to sealing of practically all liquid and gaseous media, while standing up to even the most rigorous processes.

  • Flexible Capacity - Small batch quantities to tens of thousands
  • Custom Moulding - Thermoplastic compression moulding, rubber and silicone extrusions and transfer moulding

Quality is at the forefront of our products and service delivery

We understand the need for organisations to look for potential savings from the many suppliers they rely upon for their component parts and materials.

We will always look to deliver our customer a cost-conscious solution using our expert knowledge of materials and applications.  However, our reputation as a trusted supplier to the aerospace industry is a result of our refusal to compromise on quality.

Materials to meet British (BS) and defence standards (DTD): Nitriles, Neoprene™, Naturals, EPDMs, Polyurethane, Butyl, Silicones, Fluorosilicones, FFKM and Viton®.

  • Approvals - Boeing, BAE, AIRBUS, Thales, Magnox, Rolls Royce, Leonardo, Ultra-Electronics, GKN Fokker, Babcock, Raytheon and Bombardier
  • Packaging - ISO 2230:2002, BS 3F 68/69
  • F.A.I.R - FAIRs available on request

As well as supplying parts for one-off projects and prototypes, SBR are able to fulfil large orders quickly and efficiently.  Our products meet British, international standards and NATO requirements

Product Focus: Aerospace Grade O-Rings

SBR supply customers with a range of parts for use in their vast customer networks.  Our parts and components are used across aerospace, MoD, DoD and Industry.

Whether components are used across fixed or rotary wing aircarft, we have the part and material to fully support your needs.  We have an impressive array of parts covering a wide variety of materials.

SBR strive to be a key part in the supply chain through agility, innovation and profitability.  This is both for the customers and the OEM (SBR).  Our reputation is built around flexibility, technical ability, customer service and high quality products and solutions.


Commercial and military aviation sectors rely upon our rubber, silicone and rubber sponge gaskets and components

O-rings are a key part of the SBR component portfolio.  We have gained recognition from industry for our expertise and quality in this area of rubber component production.  We manufacture and supply a range of standard and non-standard O-rings and grommets.  Other typical parts SBR supply into aircraft includes gaskets, sheeting, extrusions and seals.

View full details of our expertise in O-ring manufacture and production


Our key experience in dealing with advanced materials includes:

 EPDM NBR Viton®
 GLFT BS Specs MIL DTL 25988
 MIL Specs MSRR Specs AFS Specs
 AFS-1682-515 AMS3195 PTFE
 FDA MM0071 TS Specs
 NFL 17 Specs WRAS AMS Specs
 ASN 307 EN Specs BS F Specs
 ASTM D1056 Sponge FR Specs NAS Specs










Non-standard O-ring sizes are manufactured to tooling but our extensive range of standards includes:

 BS4518BSM48 DIN65202 NFT-47-501 
 AS568DIN3771French RNFT-47-503

SBR build and supply an impressive array of parts into both the Lynx and Merlin Helicopters

Originating from an Anglo-French agreement in the late 1960's, the Lynx has gone on to become one of the most advanced and successful shipborne helicopters operated in the world today.

Since gaining full Leonardo approval, this has allowed us to supply directly into the production line.  Our components are used in the anti-submarine, anti-ship, utility role and within rescue helicopters.  We now manufacture and supply a large number of rubber and silicone components into the Leonardo helicopter fleet.

Typical parts SBR supply into these aircraft include gaskets, sheeting, extrusions and seals.  We also manufacture a range of standard and non standard O-rings and grommets.

See an overview of our rubber and silicone components and parts