Molekula
Winchester bottle caps
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Winchester bottle caps are screw-cap closures for Winchester bottles, the standard laboratory bottles of approximately 2.5 L used to hold solvents and reagents. They are normally moulded from plastic such as polypropylene or phenolic resin, often with PTFE or other chemically resistant liners. This product has a CAS number of 66-66-666, requires no special storage conditions (suitable for ambient temperatures), and carries no hazard signal word, indicating low risk under normal handling. Molekula supplies Winchester bottle caps from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90031462 |
| CAS Number | 66-66-666 |
| REACH Code | Y110 |
| Tariff Code | 3923501000 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is the primary use of Winchester bottle caps?
Winchester bottle caps are used to close Winchester bottles, the standard approximately 2.5 L laboratory bottles for storing and dispensing solvents and reagents.
What is the chemical formula and molecular weight of Winchester bottle caps?
Winchester bottle caps are moulded plastic closures, typically polypropylene or phenolic resin, often fitted with PTFE or other chemically resistant liners. They have no single chemical formula or defined molecular weight, as they are a manufactured article made from polymer materials.
How should Winchester bottle caps be stored?
Store Winchester bottle caps in a dry, ambient environment (20–25°C) to prevent moisture absorption or damage to the sealing surfaces.
What grades or specifications are available for Winchester bottle caps?
Winchester bottle caps are specified by neck thread and finish to fit laboratory Winchester bottles (approximately 2.5 L), with options in cap material and liner type. Custom specifications may be available upon request.
Can Molekula supply Winchester bottle caps in bulk?
Yes, Molekula can provide Winchester bottle caps in bulk quantities, with minimum order quantities and packaging options tailored to your needs.
What documentation comes with an order of Winchester bottle caps?
Each order includes a Certificate of Conformance verifying material specifications and a Safety Data Sheet (SDS) (though no hazardous components are present).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.