Agricultural Gaskets & Seals
Sealing for every corner of Australian farming, from irrigation pump flanges to dairy milking lines.
Agricultural equipment faces relentless UV, dust, chemical exposure, and seasonal time pressure. We supply gaskets, O-rings, and seals in EPDM, PTFE, NBR, silicone, and FKM — matched to the actual chemicals, pressures, and temperatures your equipment sees in the field.
What a Season Demands
High UV
Outdoor Exposure
Weathering life depends on the exact compound, strain, ozone exposure, shielding, and maintenance interval
4–8 wk
Harvest Window
A failed seal during the narrow harvest window can delay an entire season's yield
> two-thirds
Australian Irrigation in the Basin
More than two-thirds of Australia's irrigation occurs in the Murray–Darling Basin, making leak control an important water-management task
Sealing Applications Across Agriculture
Irrigation Pump Flanges
Centrifugal pump volute and discharge flanges
Full-face EPDM gaskets for AS 4087 flanges, handling raw bore and dam water with suspended solids and dissolved minerals.
Dairy Milking Equipment
Milk line couplings and bulk vat seals
Silicone and EPDM compounds may be considered for milk contact where the manufacturer documentation covers the applicable food-contact provision and the site's clean-in-place cycle.
Grain Storage Silos
Access hatches, aeration ducts, discharge gates
Extruded EPDM profiles and flat-cut gaskets that maintain seal integrity during phosphine fumigation and extreme surface temperatures.
Spray Rigs and Boom Sprayers
Pump diaphragms, nozzle O-rings, filter housings
Chemical-resistant seals for equipment that switches between glyphosate, 2,4-D, fungicides, and petroleum-based adjuvants. Material choice is critical.
Hydraulic Systems
Cylinder rod seals, piston seals, SAE flange O-rings
NBR and polyurethane are common hydraulic-seal candidates. Confirm the exact compound, seal profile, connection size and series, pressure-temperature cycle, fluid, contamination, and equipment specification.
Farm Fuel Systems
Diesel tank outlets, filter housings, fuel connectors
Diesel, biodiesel, and AUS 32/AdBlue duties need separate checks. Confirm the blend, temperature, motion, and contact duration against data for the exact seal compound; PTFE is a common AUS 32 candidate.
Water Tanks and Stock Troughs
Tank outlets, float valve seals, pipe connections
For regulated drinking-water contact, use a named compound or product with AS/NZS 4020 test evidence that covers the supplied thickness, colour, and conditions of use.
Winery and Olive Press Equipment
Fermentation tank manways, press membranes, pump gaskets
Select the exact EPDM, silicone, or PTFE construction against the wine chemistry and clean-in-place cycle. Food-contact claims need the manufacturer's declaration for the supplied compound and conditions.
Fertiliser Handling Equipment
Liquid fertiliser tanks, injection pumps, NH₃ connections
Treat anhydrous ammonia, UAN solution, and dry fertiliser as separate services. Confirm concentration, temperature, pressure, flange material, and the exact gasket grade before selection.
Chemical Compatibility
Material response varies by compound, chemical concentration, temperature, pressure, and exposure time. Check the specific chemical SDS and the gasket manufacturer's data before selection. The chemical compatibility database provides an initial screening reference; it does not replace application review.
Common Materials for Agriculture
Often considered for water and outdoor duties because many EPDM compounds resist weathering and ozone. Verify the exact grade against the fluid, temperature, pressure, and report requirements.
Broad chemical resistance makes PTFE a common screening candidate for spray and fertiliser duties. Grade, filler, joint design, creep behaviour, and service conditions still control suitability.
A common candidate for mineral-oil fuel and hydraulic duties. Confirm the compound against the oil package, temperature, pressure cycle, motion, and outdoor exposure.
Selected FKM compounds can suit fuel, oil, and chemical duties. Performance varies by formulation, so verify the grade against the actual medium, temperature, and exposure cycle.
Silicone compounds are used in food equipment where their documented formulation and service limits match the duty. Check tear strength, motion, clean-in-place chemistry, and food-contact evidence.
A general-purpose candidate for weather seals and vibration mounts. Confirm the compound against oils, weathering, temperature, compression, and expected service life.
Standards & Certifications
The required evidence depends on the product, water or food-contact pathway, customer specification, and jurisdiction. Confirm the exact compound, report or declaration, limitations, and current status before treating a gasket as compliant or certified.
AS/NZS 4020:2018 (Amd 1:2022)
AS/NZS 4020 test evidence applies to the named material or product and its stated conditions and limitations. Amendment 1 includes defined NDMA test provisions for elastomeric products in monochloraminated water; it does not qualify every EPDM compound.
AS 4087:2011
Metallic flanges for waterworks. Current standard for irrigation infrastructure flanges. Pressure ratings: PN 14/16, PN 21, PN 35.
AS 2129:2000
Flanges for pipes, valves, and fittings. Common in older irrigation and processing plants. Tables A, D, E flanges suit soft gasket materials.
FDA 21 CFR 177.2600
Where a customer specification calls for 21 CFR 177.2600, check the manufacturer's declaration for the exact rubber formulation, extraction limits, food type, temperature, and conditions of repeated use. US requirements are not automatically Australian legal requirements.
3-A Sanitary Standards
A gasket may be cut to customer-supplied dimensions for equipment designed to a 3-A standard, but geometry alone does not confer 3-A certification. Claim certification only when the supplied replacement part is within a current certificate or RP Mark scope.
SAE J518 / ISO 6162
Four-screw hydraulic flange connection-system ratings are series- and size-dependent. Working pressure is limited by the lowest-rated flange, fastener, fitting, tube or hose, and seal component.
ASTM D2000
Standard classification for rubber products by heat ageing resistance and oil swell. Used to specify gasket material grades for agricultural equipment.
AS 2628:2010
Sealed grain-storage silos — sealing requirements for insect control. The standard covers sealed silos used for fumigation or controlled-atmosphere insect control and uses a specified pressure half-life, or pressure-decay, test to demonstrate gas-tightness.
AS 1210:2010
AS 1210 covers pressure-vessel design and construction. In-service inspection scope and interval depend on the applicable WHS jurisdiction, equipment classification, manufacturer information, competent-person assessment, and AS/NZS 3788.
IEC 60529 (IP Ratings)
Ingress Protection code. Agricultural equipment increasingly specified to IP67+ for dust-tight and water-immersion protection.
Primary Products for Agriculture
Engineering Guides for Agriculture
Our chemical-compatibility tool and material guides help you match an elastomer to the spray chemistries, temperatures, and water grades your equipment runs.
Browse All ResourcesExplore Further
When a Seal Goes Mid-Harvest
A failed O-ring or pump gasket during harvest can hold up a production task. Send the equipment details, verified dimensions, fluid, pressure, and temperature so we can confirm the material, supply route, documentation, and lead time at quotation.
- Application conditions checked before material selection
- Dimensions verified against a drawing or suitable sample
- Available manufacturer documentation confirmed at quotation
Disclaimer
This page is provided for general engineering reference only and does not constitute professional advice, specification, or guarantee of performance. Actual results depend on specific application conditions. Universal Gaskets Pty Ltd accepts no responsibility or liability for decisions made based on this information. For full terms, see our Terms & Conditions.
Temperature ranges, chemical resistance ratings, and mechanical properties cited on this page are typical values for standard grades. Actual performance varies with compound formulation, filler package, and service conditions — contact us to confirm suitability for your specific application.