
Custom Plastic Bottle Caps
Need custom plastic bottle caps and closures? We manufacture high-quality threaded closures to fit your needs. Perfect for spice bottles, chemical bottles, and more. Bulk discounts available! In stock and ready to ship.
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Our Most Popular Bottle Caps

- 28-400 Bottle Cap
- 28-410 Bottle Cap
- 24-410 Bottle Cap
- 24-400 Bottle Cap
- 33-400 Bottle Cap
- 38-400 Strip Molded
- 38-400 U
- 38-400 Child-Resistant
ABOUT RELIABLE CAPS, LLC
1,000,000+
caps
produced per day at our facility. We have millions of lined closures stocked and ready to go.
93,000
square foot.
facility located in the heart of the United States. We serve a worldwide audience with Midwest values.
50
years
of experience. We have been a premier injection molder of high-quality threaded closures since 1966.
The Right Partner
At Reliable Caps, we pride ourselves in being a flexible company that handles both large truckload orders and small single case orders with the same level of quality customer service.
Custom Colors
Different colors? Caps with your logo? We love to create custom caps designed specifically to fit your requirements.
Low minimum
To provide the best customer experience, we don't require high minimums, unlike some other companies.
Large Inventory
We keep millions of closures in stock and ready to ship worldwide, with sizes ranging from 24mm to 110mm.
© 2025 Reliable Caps, LLC. All rights reserved. 1001 W Old 56 Hwy, Olathe, KS 66061