Description
This is a 33-400 black, ribbed, continuous thread cap with a foam liner. The foam liner creates an air-tight seal as long as the cap is screwed on tightly to the container. Foam liners are many-use liners and remain snugly tucked inside the cap. This lid is made of polypropylene which is a great plastic because of its durability.
Product Details
| Finish | 33-400 |
| Case pack | 3600 units |
| Color | Black |
| Material | PP (polypropylene) |
| Recycling code | #5 PP |
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Matching products
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Clearance
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Material at a glance
PP · Polypropylene
Strong and durable, and the most heat-resistant of the common packaging plastics.
Maximum temperature
- Heat resistance
- High, up to 275°F (hot fill and dishwasher)
- Durability
- Strong; makes durable flip-top hinges
- Chemical resistance
- Good with acids, bases and alcohols
- Color
- Translucent, opaque or any color
Great for
- Hot-filled and dishwasher-safe products
- Caps, closures and jars
Avoid
- Heat above 275°F
- Freezing temperatures (can turn brittle)
General material information. Always test compatibility with your product; free samples are available.
Liner at a glance
Foam liner
A general-purpose, economical liner made of low-density PE foam. It stays in the cap for repeated use and seals when the cap is screwed on tightly.
- Seal
- Compresses against the rim when tightened
- Reusable
- Yes, stays in the cap
Great for
- Foods and beverages
- Cosmetics
- Industrial and household chemicals
General guidance based on industry recommendations. Always test compatibility with your product; free samples are available.
Real people. Real service.
Need a large volume? Talk to a packaging specialist.
Ordering by the pallet, or need help matching containers and closures? Tell us what you’re packaging and we’ll put together the right combination, with free samples to test first.

