This is a sealing gasket for coffee machine valves. It’s a deep black stepped integrated component. It consists of three parts. The parts are a small round head, a frustoconical main body, and a small cylindrical fitting pin at the bottom. Dimensional transitions between all sections are uniform. Its surface has a matte texture. Thanks to its high hardness, it maintains a rigid shape resistant to deformation. The edges are precision-machined to be smooth and burr-free. The small cylindrical fitting pin at the bottom features a regular thickness. It can be perfectly fitted into the mounting groove of coffee machine valves.As a specialized sealing accessory for beverage equipment, it meets the application standards of
Specialized Equipment Accessories and
Custom Equipment Parts. It is compatible with the precision requirements of
Specialty Device Components and
Equipment-Specific Fittings.
Product Features
1. Functions
1)Precision Sealing of Valve GapsIt serves as the core sealing component of coffee machine valves. Its stepped integrated structure can fully fit the contact surface at the valve opening and closing position. It fills the micro-gaps between the valve and the mounting base tightly. It prevents high-temperature coffee liquid from leaking through the gaps. It also blocks the overflow of steam generated during operation effectively. It avoids the contamination of the internal machine body or external countertops by coffee droplets carried by steam.
2)Stable Fixation and Adaptive MovementThe design of the small cylindrical fitting pin at the bottom can be embedded into the dedicated mounting groove of the coffee machine valve accurately. It forms a firm positioning effect. This ensures that the sealing gasket will not shift or fall off during the high-frequency opening and closing movements of the valve. The overall structure is adapted to the valve movement track. It will not affect the sealing stability due to friction or extrusion caused by valve opening and closing. It ensures the normal switching function of the valve.
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2. Performance Characteristics
1)EPDM Material + High Hardness for Sealing RequirementsEPDM is selected as the core material. It inherently has excellent corrosion resistance, elastic recovery and chemical stability. It is an ideal choice for sealing components. Combined with a high hardness setting of 75–80°A, it ensures sufficient structural rigidity of the sealing gasket. It avoids excessive deformation under valve extrusion. It maintains tight fit with the contact surface at all times. It also retains moderate elasticity. It meets the minor deformation requirements during valve opening and closing. It prevents poor fit caused by excessively high hardness. It also prevents sealing failure caused by deformation due to excessively low hardness.
2)Citric Acid Resistance for Coffee EnvironmentCoffee liquid naturally contains citric acid. It can corrode ordinary sealing materials after long-term contact. Optimized specifically for this application scenario, the EPDM material of this gasket has excellent acid resistance. Through targeted formula adjustment, it can resist the corrosion of citric acid effectively. After long-term immersion or contact with coffee liquid, there will be no material swelling, cracking, stickiness or performance degradation. It maintains stable sealing effect.
3)Temperature Resistance for Coffee Machine Working ConditionsDuring the operation of coffee machines, the temperature of coffee liquid is usually between 85–95℃. The steam temperature is even higher. The EPDM material of this gasket has good temperature resistance. It can stably withstand high-temperature environments of 80–120℃. Under long-term high-temperature baking or contact with high-temperature liquids, it will not experience material hardening, embrittlement, softening or deformation. It always maintains its original structure and sealing performance. It adapts to the continuous working conditions of coffee machines.
4)Structural Design Balancing Adaptability and DurabilityThe stepped layered structure is designed according to the valve installation space and contact requirements. Dimensional transitions between sections are uniform. It can be matched with valve mounting positions of different specifications precisely. The matte surface treatment and precision-machined edges are burr-free and defect-free. It reduces friction loss with the valve contact surface. It extends service life. The high hardness feature also prevents the gasket from deformation due to slight collision or touch during cleaning in daily use. It further enhances durability.
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3. Application Scenarios
1)Core Valve Positions of Various Coffee MachinesIt is widely applicable to different types of civil or commercial coffee machines. These include espresso machines, semi-automatic coffee machines, fully automatic coffee machines and drip coffee machines. It is especially suitable for key sealing positions requiring high-frequency opening and closing. These positions include water outlet valves, steam valves and pressure relief valves.
2)Sealing Scenarios in Contact with Coffee LiquidSpecifically designed for coffee making environments, it is particularly suitable for valve sealing scenarios that are in direct contact with coffee liquid. It is also suitable for scenarios of long-term immersion in coffee liquid or steam fumigation. These scenarios include the brew head valves, hot water outlet valves and steam wand valves of coffee machines. It can withstand the long-term effects of citric acid, grease and other components in coffee liquid.
3)High-Frequency Commercial and Household ApplicationsWhether it is the high-frequency valve operation dozens or even hundreds of times a day in commercial scenarios such as coffee shops and restaurants, or the frequent opening and closing in daily household use, this gasket can maintain long-term reliable sealing effect. It relies on its structural stability and material durability. It adapts to the needs of different usage intensities.
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4. Pain Point Solutions
1)Solving Pollution and Waste Caused by LeakageWhen ordinary seals are not tightly fitted, high-temperature coffee liquid and steam are prone to leakage. It not only soils the coffee machine body and countertops, but also causes coffee liquid waste. It even poses a scald risk due to steam overflow. Through its tight-fitting sealing structure and stable positioning design, this gasket blocks the leakage path completely. It avoids pollution and waste. It improves the safety of use.
2)Solving the Problem of Citric Acid-Induced Aging of Ordinary SealsMost general-purpose sealing materials are prone to aging, embrittlement and cracking when exposed to citric acid in coffee for a long time. It leads to sealing failure and frequent replacement. The EPDM material of this gasket has targeted citric acid resistance. It can resist the erosion of acidic substances. It greatly extends the service life. It reduces the replacement frequency and maintenance cost.
3)Solving Sealing Failure Caused by Deformation of Low-Hardness SealsUnder the combined effects of high temperature, extrusion and high-frequency friction, low-hardness seals are prone to permanent deformation. It results in gaps between the seal and the valve contact surface and loss of sealing effect. The 75–80°A high hardness setting of this gasket can resist deformation effectively. It maintains its original shape even after long-term use. It continuously fills the sealing gap. It avoids sealing failure caused by deformation.
4)Solving the Problem of Seal Displacement After InstallationSome seals lack precise positioning design. They are prone to displacement and falling off during the repeated opening and closing movements of the valve. It leads to unstable sealing effect and affects the normal use of the coffee machine. The fitting pin at the bottom of this gasket is matched with the mounting groove precisely. It forms a firm positioning. It ensures that the gasket is always in the correct sealing position. It guarantees the stability and consistency of the sealing effect.
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