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Silikonpackningar & Sälar
Silikonpackningsmaterialguide
En silikonpackning erbjuder en mekanisk tätning för att fylla gapet mellan ytorna i en enhet. Det är silikonämnet eller föremålet som fyller ett gap mellan delarna (in- eller utträde) (in- eller utträde). Silikonpackningar kan skapas av olika former av silikon, inklusive fast silikon, silikonskum, silikonsvamp, gjuten silikon, och 3D-printat silikon. Silikonpackningar finns i olika färger, durometer, kemi, och tillsatspaket.
Andra kvaliteter av högpresterande silikonpackningar inkluderar:
- Område av termisk/elektrisk ledningsförmåga eller isolering
- UV- och ozonbeständighet
- Konsekvent mekanisk prestanda över ett brett temperaturområde
- Utmärkt kompatibilitet med ett brett utbud av andra material
Fördelar med silikonpackningar
Det finns miljontals material tillgängliga för att bygga packningar, men silikonpackningar sticker ut på grund av deras många fördelar. De kan användas både inomhus och utomhus.
Förmåga att motstå höga och låga temperaturer
Silikonpackningar är idealiska för många industriella applikationer eftersom de tål temperaturer på upp till 392 grader Fahrenheit kontinuerligt, utan att förnedra eller slitas ut. Dessutom, de tål värme upp till 428 grader Fahrenheit intermittent.
Förutom att vara värmebeständig, Silikonpackningar förblir flexibla även vid extremt kalla temperaturer. De tål så låga temperaturer som -94 grader Fahrenheit.
Utmärkt isolering
Silikonpackningar är bra isolatorer av el. Genom att kombinera silikon med nickel-grafit eller silverpläterade aluminiumpartiklar, de kan också filtrera elektromagnetisk störning (EMI) på grund av deras ledande egenskaper. Detta är särskilt viktigt för elektriska apparater.
Silikoner används ofta i högspänningsisolatorer och andra elektriska komponenter. De kan tvärbindas genom olika kemiska processer, gör dem icke-reaktiva vid höga temperaturer. Elsektorn är starkt beroende av dessa icke-reaktiva material.
När elektromagnetisk urladdning är ett problem, silikon kan kombineras med halvledande kol för att ge skydd mot elektromagnetiskt urladdning.
Mycket hållbar
Silikonpackningar är otroligt hållbara, eftersom de är resistenta mot UV-strålning, ozon, och svåra väderförhållanden. Detta gör dem perfekta för utomhusbruk. Dessutom, deras livslängd gör dem till ett billigt alternativ. De är ett pålitligt och stabilt ämne som kan användas under lång tid utan att uppvisa slitage, och de kräver inte mycket underhåll efter installationen.
Fda godkänd
Silikonpackningar är FDA-godkända, gör dem lämpliga för användning i medicinsk utrustning, sjukvårdens instrument, och livsmedelsförädlingsanläggningar. De kan också blandas med andra FDA-godkända föreningar för att ge hög rivhållfasthet.
Till skillnad från asbestpackningar, silikonpackningar är medicinskt inerta, vilket betyder att de inte är giftiga och inte skadar människor. Dessa egenskaper gör silikonpackningar viktiga för industrier som sjukvård, livsmedelsbearbetning, medicinsk diagnostik, och läkemedel.
Flamskyddsmedel
Silikonpackningar har låga brännbarhetsnivåer, vilket gör dem lämpliga för företag som genererar betydande värme. De kan användas i telekommunikationsutrustning och kollektivtrafiksystem.
Silikonpackningar uppfyller testkriterierna från Underwriters Laboratories (UL) för brandsäkerhet och flamskydd. Detta innebär att kiselpackningar kan uppnå UL94V0, UL94V1, och UL94HF1 brännbarhetskriterier.
Vattenavvisande material
Silikonpackningar är tillverkade med ett vattenavvisande ämne, som effektivt stöter bort regnvatten och bekämpar fukt. Dessa funktioner gör dem till ett utmärkt val för företag som hanterar fukt eller vatten, samt för utomhusapplikationer i fuktiga väderförhållanden.
Silikonpackningar bibehåller en vattentät tätning, se till att ditt företag förblir torrt och fuktfritt, även i utmanande miljöer.
Typer av packningar
Silikonpackningar kan klassificeras på flera olika sätt. Till exempel, solida silikonpackningar och svampsilikonpackningar är separata eftersom de har olika molekylära strukturer. Hårdhet eller durometer utmärker också silikontätning. Foam silicone gaskets may be soft like sponge silicone gaskets, but foam silicones are separate because they include different components and employ other curing procedures. Interstate die cuts all of these silicone gasket kinds.
Solid Silicone Gaskets
Solid silicone gaskets are comprised of solid rubber components with a tightly-packed molecular structure.
- They have lower durometers (hardness) and compression rates than sponge silicones
- Not all solid silicones are “soft”
- Lower-durometer solid silicones provide robust environmental sealing with low closure force
- Solid silicone gaskets with mid-range durometers require increased closing force
Sponge Silicone Gaskets
Sponge silicone gaskets are comprised of sponge-like silicone compounds that provide cushioning and padding. Interstate die cuts both primary types of sponge silicone materials: open-cell and closed-cell.
- Open-cell silicone gaskets have linked pockets that unless the gasket is squeezed, enable water, kemikalier, and air to flow
- Closed-cell silicone gaskets are filled with nitrogen gas to block the passage of these compounds at low pressures
Foam Silicone Gaskets
Foam silicone gaskets are constructed of soft, medium, firm, or extra-firm silicone grades for varied quantities of compressibility.
- They have a lower compression set than sponge silicone gaskets
- Provide greater flame resistance
The die cuts the three primary forms of foam silicone materials: open-cell, closed-cell, and silicone rubber which contains both open and closed cells. Like solid silicones and sponge silicones, foam silicones have diverse uses.
Injection Molded Silicone Gaskets
Molded silicone seals with round or bespoke cross-sections are commonly required for high wash down (IP66 or NEMA 4) or water submersion requirements. Flytande silikongummi (LSR) permits very tiny cross sections, down to .030″, to be molded in durometers from 10 till 70 Shore A. Using injection molded liquid silicone rubber, separating line flash may be eliminated to guarantee sealing integrity. Get our handy Liquid Silicone Touch brochure to assist in developing enclosure sealing.
- At a Glance: Injection Molded Silicone Gaskets
- Excellent for intense water spray and submersion
- Broad durometer range (10 – 70 Shore A) (10 – 70 Shore A)
- Molding enables unique three-dimensional pieces
- Large temperature range (-67°F to 392°F)
UV- och ozonbeständighet
Specialty Silicone Gasket Materials
Silicone gasket materials are widely utilized in different sectors for their superior qualities, such as high-temperature resistance, kemisk resistans, och flexibilitet. These gaskets are produced from silicone rubber, which is a synthetic elastomer that can endure high temperatures ranging from -55°C to 300°C. They are extensively utilized in automotive, flyg, and food processing sectors.
Platinum Cure Silicone Elastomers
Every elastomer in LGDSilicone Products’ range is cured with heat and platinum, transparent, and complies with FDA guidelines for rubber items, United States Pharmacopeia and National Formulary (USP) Class VI criteria, and the European Union’s Restriction of Hazardous Substances Directive (Rohs) (Rohs). Engineered for usage with food, these silicone materials are available in custom colors, sheets, and ready-to-mold compound form, as well as durometers ranging from 10 till 80.
Military and Aerospace Silicones
LGDSilicone Products offers a comprehensive array of silicone gasket materials that may fulfill even the most demanding military and aerospace applications. Fluorosilicone products in this class offer chemical and fuel resistance, whereas silicone rubber gasket materials are examined to military and aerospace specifications such as MIL-DTL-25988C and A-A-59588A. Hög- and low-temperature applications are no impediment for this array of silicones.
Particle-Filled Shielding Silicones
LGDSilicone Products offers a wide selection of electrically conductive EMI and RFI shielding silicone gasket materials in this category. These materials are ideal for satellite communications, bil-, unmanned systems, and aerospace applications. Fill materials include nickel aluminum, nickel graphite, silver aluminum, silver copper, silver glass, and silver nickel. Each material is offered as compression-molded sheet stock, continuous rolls, and uncured moldable compounds.
What Are the Uses of Silicone Gaskets?
Silicone gaskets can resist high and low temperatures making them a versatile material. You may use it for a broad number of purposes, Inklusive:
- Matbearbetning
- Medical equipment
- Industrial processes
- Automobile engines
- Flyg och rymd
- Pharmaceutical
- Mobile technologies
- Energi
- Transportation
You can use silicone gaskets when you require a material with high-temperature resistance, a low compression set, and strong electrical insulation.
Properties of silicone gaskets
Silicone gaskets come in solid, foam, and sponge versions - making them an incredibly versatile alternative. It is a durable material with good temperature stability and does not react with many chemicals, making it typically innocuous. Silicone is a good gasket choice because it makes a tight seal and repels water. Dessutom, its capacity to endure temperature fluctuations makes it preferable to many other forms of rubber. Solid silicone may be utilized with metal closures and requires good closure force. Däremot, the closed cell structure of silicone sponge and foam makes them suited for environmental sealing applications where lower closure forces are necessary.
Ideal for usage in either hot or low-temperature situations, the Silicone sponge’s hardness is assessed in psi or density, with two to five psi or 250kg/m3 considered soft and 14 till 20 psi or 650kg/m3 considered firm. Silicone foam with a closed cell structure is therefore appropriate for an environmental enclosure. Silicone has strong compression set performance, but its rip strength The advantages of silicone include:
Flexibel - It won’t freeze or crack at high or cold temperatures.
Vattentät - It won’t break down because of exposure to water.
Shrink-proof — It won’t shrink throughout the course of its lifetime
Extremely good weather resistance – It is not vulnerable to ozone or UV assault
Silicone Gaskets FAQs
What are silicone gaskets used for?
In the building sector, doors and HVAC systems are sealed with silicone gaskets. They are utilized in industrial oven seals and equipment for food preparation. They are utilized for medical and healthcare devices in the sector.
Does silicone make a good gasket?
Silicone is a good choice for gaskets because it makes a tight seal and repels water. Dessutom, its capacity to endure temperature fluctuations make it preferable to many other forms of rubber.
What are the disadvantages of silicone gaskets?
One of the biggest drawbacks of silicone rubber is its weak rip strength. This can be enhanced with the addition of additional chemicals, but it doesn't inherently give strength or abrasion resistance, therefore the application needs to be carefully analyzed for the suitability of silicone as a solution.
Is it OK to use silicone on rubber gasket?
Depending on what it's for but ultimately, ja. Silicone is what rubber is composed of. Silicone is used to “fill the gaps” depending on what gasket you refer to and if it is supposed to be removed later on.
How Do Silicone Gaskets Compare to Rubber Gaskets?
While rubber gaskets come from rubber trees, silicone gaskets are man-made. In certain situations, silicone gaskets can perform better and be more efficient. Till exempel, they are preferable when dealing with extremely high temperatures.
Natural rubber can effectively perform within a range of -58 till 176 grader Fahrenheit, whereas silicone can endure severe temperatures from -58 grader till 446 grader. Natural rubber begins to wear out around 176 degrees and melts at 248 grader.
Rubber cannot be used with ozone, starka syror, fetter, oljor, and grease. Å andra sidan, silicone can be utilized with these materials. Silicone gaskets are suitable in harsh weather conditions and for outdoor use with UV exposure.
Do you put silicone on both sides of a gasket?
Unless a primer is necessary, you should apply the sealant to the prepared surface. Apply an equal coat to all sides of the gasket.
Contact Your Silicone Gaskets Expert Today
By now, you should be familiar with everything there is to know about silicone gaskets, including all of their benefits. They are a flexible alternative for many different sectors. If you believe silicone gaskets are the best solution for your needs, you may be wondering where to acquire them.
You need a reliable firm that can help you with any difficulties, answer your inquiries, and provide the necessary experience. LGDsilicone is one such firm. LGDsilicone is also a prominent manufacturer known for making top-quality silicone gaskets. Kontakta oss today to receive a customized quotation for your company's requirements.