Red Natural Rubber Bungs RB021 / Stopper No 21

Red Natural Rubber Bung Stopper No 21 - Size 21mm Bottom, 24.5mm Top and 28mm Length.

• Durable

• Tear resistant

• High quality

• Operates at a temperature ranging -50°C to 70°C

To Standard BS2775:1978 (1992).

Stoppers for tubes and bottles made from rubber. Can be supplied with hole upon request for tubes to pass through - See below sizes that can have this service.

Each stopper has a moulded-in number, corresponding to the bottom diameter in millimetres.

Hole Drilling:

Natural rubber stoppers can be supplied with holes, see below sizes:

3 and 4: Supplied solid only

5 to 8: 1 hole of 3mm

9 to 105: 1 hole of 5mm

15 to 105: 2 holes of 5mm

Please note that the Bungs can be supplied with pre drilled holes, however they are not stocked as standard. This is a separate process and therefore Bungs with predrilled holes are more bespoke.

Please advise as to your order requirements and we will by return advise on the current availability and lead time.  On occasion this lead time can be a relatively short turn-around, typically 7 - 10 days is the norm, occasionally certain smaller bungs with holes maybe subject to a Minimum order quantity to make the process economically viable.