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The sealing ring, also known as the gasket, is a crucial component of an pressure cooker. Its primary purpose is to create a tight and secure seal between the lid and the pot body, allowing the cooker to build up and retain pressure. With time and use, these sealing rings can wear out and may need replacement. There are various types of innova pressure cooker sealing rings available in the market based on material composition and design features. Different types of sealing rings offer unique advantages catering to diverse cooking preferences and requirements.
Rubber/TPR (Thermo Plastic Rubber) Gasket
TPR or rubber gaskets are inexpensive and last for a long time. These sealing rings are made of rubber or TPR, a type of flexible plastic. They can withstand high pressures and temperatures, making them perfect for use in pressure cookers. These sealing rings are affordable and durable. They are also easy to clean, which makes them suitable for everyday cooking. However, over time, exposure to extreme heat and repeated pressure cycles can cause the rubber to harden or crack, leading to wear and tear. To ensure proper functionality and safety, it's important to regularly check and replace these gaskets as needed.
Silicone Sealing Rings
Silicone sealing rings are perfect for cooking with high acidity or alkalinity content foods. These sealing rings are made from food-grade silicone, a flexible and heat-resistant material. Silicone sealing rings can handle high temperatures and pressures, making them ideal for use in pressure cookers. They are also resistant to stains and odors. These sealing rings are easy to clean and maintain. Silicone sealing rings are designed to fit most standard-sized pressure cookers. They are lightweight and portable, making them convenient for use at home or while traveling. These sealing rings are durable and long-lasting. They can withstand repeated use and cleaning without losing their effectiveness.
High-Temperature Resistant PTFE Gasket
PTFE (Polytetrafluoroethylene) is a high-performance polymer known for its excellent chemical resistance and high-temperature stability. PTFE gaskets are suitable for use in pressure cookers that operate at elevated temperatures or handle aggressive chemicals. These sealing rings provide a reliable and leak-proof solution in demanding environments where other materials may degrade or fail.
Custom-Made Sealing Rings
Some pressure cookers may have unique designs or features that require custom-made sealing rings. These sealing rings are manufactured based on specific requirements and can be made from various materials, including rubber, silicone, or metal. Custom-made sealing rings ensure a perfect fit and optimal performance for specialized pressure cooker models.
Pressure cookers use the sealing ring to keep steam inside, which creates the pressure needed for cooking. Different kinds of sealing rings are available to suit different cooking styles and preferences.
Standard design
This is the most common design found in many kitchens worldwide. It consists of a flat rubber ring that fits into a groove on the cooker lid. When the lid is locked, this ring compresses to create a tight seal, preventing steam from escaping and pressure from dropping.
Double gasket design
Some pressure cookers with higher safety standards and pressure ratings use this design. It has two gaskets stacked on top of each other. One inner gasket seals against steam, while the outer one acts as a backup to ensure no leakage occurs, even under extreme conditions.
V-ribbed design
The V-ribbed pressure cooker sealing ring has multiple angled ridges or ribs arranged in a V shape around its circumference. These ribs provide extra flexibility and compression strength compared to regular flat rubber rings. They allow the gasket to adapt better to slight variations in surface smoothness between different pots and lids, ensuring a more consistent seal every time it is used.
Silicone-based design
Silicone sealing rings are becoming popular due to their ability to withstand high temperatures and low temperatures better than rubber. They don't crack or wear out quickly, making them ideal for pressure cookers used for both cooking and storing food. Silicone sealing rings are also available in different colors, which can be used to indicate different pressure levels or types of cooking.
Eco-friendly design
As people become more aware of environmental issues, eco-friendly sealing rings are being developed using biodegradable materials like natural rubber or recycled polymers. They aim to provide the same performance as conventional ones while reducing environmental impact over their entire lifecycle, from production through disposal.
The use of the sealing ring in the pressure cooker is a must for maintaining airtightness. This ensures that the pressure cooker works as it should. The only time the sealing ring is used is when the pressure cooker is in operation.
While cooking, the sealing ring forms a tight seal between the lid and the pot body. This allows the pressure to build up inside the cooker, which, in turn, raises the boiling point of water and creates steam. The high pressure inside the pot cooks food faster than normal by increasing temperatures above standard boiling levels, resulting in tenderized meats and perfectly cooked vegetables within minutes instead of hours.
Besides cooking, sealing rings are also helpful in making jams, jellies, and preserves. Sealing rings allow for controlled cooking in making yogurt and cheesecakes. They help steam dishes like puddings, fish, or even whole meals with multiple components. The versatile pressure cooker and its sealing rings can prepare soups, stews, grains, legumes, and more, resulting in nutritious, flavorful, and tenderized food in less time than traditional methods.
Material of the sealing ring
Sealing rings for pressure cookers are mostly made of rubber or silicone. Rubber rings are the most affordable and can serve for a long time. They are, however, not compatible with dishwasher cleaning. Silicone rings can work under different temperatures and are ideal for dishwasher cleaning.
Size and model of the pressure cooker
The sealing ring for each pressure cooker is specific to its model. When purchasing, it is important to get the exact model of the pressure cooker to get the right fit. Generic models can work with sealing rings compatible with several models. They may, however, not be the best fit.
Thickness of the sealing ring
The thickness of the sealing ring affects how well it fits on the pressure cooker. Some pressure cookers come with several sealing rings of different thicknesses to suit different needs. A compatible sealing ring that is too thick may change how the pressure cooker works and vice versa.
Ease of maintenance
Sealing rings made of silicone are easier to clean and maintain than rubber sealing rings. Before purchasing a sealing ring, it is important to consider how easy it is to maintain, especially when the pressure cooker is used frequently. In commercial settings where the pressure cooker is used several times a day, the maintenance routine for the sealing ring needs to be simple.
Q1: How often should one replace the pressure cooker sealing ring?
A1: It is advisable to change the sealing ring every six months, but it may need to be changed more frequently if it is subjected to strong odors or stains.
Q2: What are the signs that indicate a need to replace the pressure cooker sealing ring?
A2: Signs include loss of pressure during cooking, visible cracks or damage on the ring, excessive wear after inspection, or deformation when fitting into the cooker lid groove.
Q3: Why do odors transfer to the sealing ring?
A3: Rubber or silicone can absorb strong smells from food, especially if they have been used to cook something with a distinctive fragrance.
Q4: How can one extend the lifespan of a pressure cooker sealing ring?
A4: To prolong its life, use two different sealing rings for each type of cooking and store them separately from the pressure cooker; this will prevent them from becoming deformed or damaged.
Q5: Can one use any sealing ring as a replacement?
A5: Use only original replacement parts, which are specifically designed to fit and work well with your model. Using others might lead to pressure loss, cooking failure, or even accidents.
