Fridge and freezer door seals play a crucial role in keeping cold air inside your appliance. When a seal works properly, it prevents warm air from entering, helping your fridge maintain the correct temperature and operate efficiently.
But not all fridge seals are made from the same material. Different environments, from domestic kitchens to busy restaurant kitchens, and different fridges may require different types of sealing material.
In this guide, we’ll explain the most common fridge door seal materials, how they work, and where they’re best used.
The Most Common Fridge Seal Materials
1. PVC (Polyvinyl Chloride)
PVC is the most common material used in fridge seals, for both commercial and domestic appliances.
Pure PVC is actually quite hard and rigid. To make it flexible enough to work as a door seal, manufacturers add special softening agents called plasticisers. These work by loosening the structure of the material and making it feel rubbery, allowing it to bend and compress when you close the fridge door, and spring back into shape when you open it again.
Benefits of PVC Fridge Seals
PVC seals are popular because they are:
- Affordable
- Flexible
- Easy to manufacture
- Resistant to moisture
- Suitable for most commercial refrigerators operating at standard temperatures.
This makes them ideal for most household refrigerators and many commercial units.
Limitations of PVC Seals
Over time, PVC can become hard or brittle, especially when exposed to:
- Grease or oils
- High temperatures
- Ageing plasticisers in the material
When this happens, the seal may crack or lose its flexibility. Once a PVC seal hardens, it can no longer press firmly against the fridge door, which means cold air starts leaking out.
In freezer environments, this is a particular concern. Very low temperatures can speed up the hardening process, meaning PVC seals in freezers may need replacing more frequently.
The bottom line is that PVC is a cost-effective, reliable option for standard fridges, but it has limits, particularly in freezer use or kitchens where grease and heat are a factor.
2. Rubber Seals
Rubber is another common material used in refrigeration gaskets, especially in commercial equipment and cold storage environments.
Unlike magnetic fridge seals, they often require a plastic retainer or fixing strip to hold the seal securely in place around the door frame.
These seals provide excellent durability, flexibility, and sealing efficiency, helping refrigeration equipment operate reliably and maintain stable temperatures.
At The Seal Company, we specialise in supplying high-quality rubber profiles designed to meet the demanding conditions found in professional kitchens, supermarkets, and food production environments.
EPDM Rubber Fridge Seals
Different types of rubber can be used depending on the refrigeration environment.
However, EPDM is one of the most commonly used synthetic rubbers in refrigeration seals.
It is known for its:
- Excellent resistance to weather, moisture and temperature changes
- Long lifespan
- Good flexibility even in colder environments
EPDM rubber is widely used in commercial refrigeration systems and cold storage doors, where durability and long-term performance are essential.
Benefits of Rubber Fridge Seals
Rubber seals are valued for their:
- Excellent flexibility: Rubber remains flexible over time, allowing the seal to compress and expand properly as doors open and close.
- Strong sealing performance
- Resistance to wear
- Long lifespan: High-quality rubber materials can withstand constant use in busy commercial environments where fridge doors are opened frequently.
- Ability to maintain a tight seal even with heavy daily use.
These properties make rubber a good choice for:
- Walk in coldrooms
- Coldstore freezer rooms
- Industrial cooling systems
- Commercial fridges
- Supermarket refrigeration
- Fast food and restaurant equipment
Limitations of EPDM Rubber Seals
- Not highly resistant to oils and grease
- Can swell or degrade if exposed to petroleum-based substances
- Slightly more expensive than some basic rubber materials
3. Silicone Seals
Silicone is often considered a premium sealing material because it performs well in extreme conditions. Unlike PVC, silicone remains flexible across a much wider temperature range.
It’s not the most common choice, and it’s not meant to be. Instead, it’s engineered for situations where standard materials simply won’t cut it. It stays fully flexible in deep-freeze conditions and can handle high heat exposure without degrading, well beyond what any other common seal material can withstand. This makes it uniquely suited to environments where the fridge is exposed to both intense cold inside and significant heat outside.
Key Benefits of Silicone Seals
Silicone fridge seals are known for:
- Excellent temperature resistance
- Long lifespan
- Resistance to UV, ozone and chemicals
- Food-safe properties
Because of these advantages, silicone seals are commonly used in:
- Commercial kitchens
- Laboratory refrigerators
- Medical refrigeration
- Equipment near heat sources
Limitations of Silicone Seals
- More expensive than PVC or standard rubber
- More complex to manufacture
- Softer material that may tear more easily if damaged. Learn more about the critical business risks of damaged fridge seals.
4. Thermoplastic Elastomers (TPE)
Some modern refrigerators use materials known as TPE. TPE stands for Thermoplastic Elastomer, a hybrid material combining rubber-like flexibility with the durability and ease of manufacturing associated with plastics. Some of the benefits of TPE seals are that they are flexible, lightweight, and perform well in cold temperatures. However, they are usually more expensive than PVC and might be less durable.
Fridge Door Seal Material Comparison
Why Fridge Door Seal Material Choice Matters
Different environments put different demands on fridge seals. For example, most household fridges work perfectly well with PVC or rubber seals, which offer good performance at a reasonable cost. On the other hand, restaurants and busy commercial kitchens open and close fridge doors hundreds of times per day, so seals must handle:
- Frequent use
- Grease and cleaning chemicals
- Temperature fluctuations
In these environments, rubber or silicone seals often perform better.
In large refrigeration systems, such as those in fast food or supermarkets, durability and hygiene become critical. Some modern systems use high-performance elastomers that resist wear and help maintain an airtight seal for longer.
While they are commonly used by appliance manufacturers, replacement seals in the aftermarket are typically made from PVC, rubber or silicone, which provide reliable sealing performance and are widely available for commercial and domestic refrigeration.
Final Thoughts
Fridge door seals might seem like a small component, but they play a vital role in keeping refrigeration systems efficient.
The material used in the seal affects how well it performs in different environments:
- PVC is a cost-effective option commonly used in domestic and commercial refrigeration systems.
- Rubber provides durability and flexibility for commercial refrigeration.
- Silicone offers excellent performance in extreme temperatures and specialist environments.
Choosing the right seal material helps ensure your refrigeration equipment maintains a tight airtight seal, stable temperatures and energy efficiency.
Regardless of the material, proper maintenance can significantly extend the life of your fridge seal. Over time, grease, food residue and dirt can build up around the gasket. This can prevent the seal from sitting flush against the door and may cause it to wear out faster.
Fridge door seals should be cleaned regularly to:
- Maintain flexibility
- Prevent mould build-up
- Ensure the seal closes properly
- Extend the lifespan of the gasket
Even a high-quality seal will wear out faster if it isn’t cleaned and maintained.
Whether you’re maintaining a domestic fridge or servicing commercial refrigeration, The Seal Company makes it easy to identify, measure and replace the right seal.
Engineers and trade professionals can register for a business account to access trade discounts, while end users can create an account to track orders and save items for later.
Whether you are looking for a branded seal or a bespoke solution, we’ve got you covered.
Get in touch with us for a quote today!
Frequently Asked Questions on Fridge Door Seals Material
What are fridge door seals made of?
Fridge door seals are typically made from flexible materials such as PVC, rubber, or silicone. PVC is the most common material used in many domestic refrigerators because it is flexible and cost-effective. Rubber seals are often used in commercial refrigeration and walk-in cold rooms because they are durable and handle heavy use well. Silicone seals are used in specialist environments where equipment must withstand extreme temperatures or high hygiene standards.
Can you replace the rubber seal on a fridge door?
Yes, of course. Replacing a rubber profile seal for your domestic or commercial refrigeration unit is quick and easy. First of all, you need to identify your gasket. If you cannot find the identification plate or do not get a match, you need to determine the cross-section of your existing seal.
Then you need to measure your gasket and use your profile and measurement details to place your order from the Profile Overview. Follow our guide to order a bespoke fridge seal for more details and get your fridge seal replacement sorted.
What is the best adhesive for refrigerator door seals?
For fridge door seals, while adhesives like contact cement or silicone can be used for minor repairs, they are really only a temporary fix. A seal replacement is almost always the better option. A new seal restores a proper airtight fit, reduces energy consumption (since your fridge won’t have to work as hard), and is a longer-lasting solution.
Replacement seals are also relatively inexpensive, and you can find the right one by looking up your fridge’s model number. If your unit’s make/model number is unknown, you can purchase a bespoke gasket for a true made-to-order seal.