Industrial & MRO Gaskets
Identification, material screening and custom cutting for maintenance, repair and operations.
A breakdown replacement still needs the original design intent, complete service and verified joint dimensions. We use drawings, samples and photos to identify the part, then confirm material, thickness, tolerances and the governing equipment or project requirements before manufacture.
Practical Support for MRO Teams
MRO work ranges from standard flange gaskets to non-standard covers, enclosure seals and legacy equipment. The first task is to identify the joint and service before choosing a construction.
For non-standard equipment, our reverse-engineering capability uses drawings, samples and photos as enquiry inputs. Manufacture still requires verified dimensions, thickness, material and service data, tolerances and allowance for worn or distorted samples.
What to Send with an Enquiry
- Drawing, DXF or verified dimensions and thickness
- Sample condition, including wear, distortion or corrosion
- Medium, treatment chemicals and coincident pressure-temperature conditions
- Equipment drawing, flange/facing details and OEM or project requirements
Workshop Tip
Material Selection by Service
Screening only. Confirm the exact product grade or compound, construction, medium, coincident pressure-temperature conditions, flange, joint load and governing equipment or project requirements.
MRO Industries We Support
Plant Maintenance & Facilities
Legacy air receivers, manway covers and discontinued enclosure seals often arrive without a current drawing. Send the old gasket, a sketch or a photo for identification, then confirm dimensions, thickness, tolerances, material and service before manufacture.
Browse Soft-Cut GasketsOEM Supply
OEM repeat parts need a controlled drawing, material specification, tolerance and inspection plan. State the required source certificates, batch linkage and dimensional records in the order because document availability depends on the material and manufacturing route.
Browse Moulded PartsPressure Vessels & Piping
For pressure vessels and piping designed to AS 1210 or AS 4041, manufacture the replacement to the equipment drawing, applicable flange and gasket dimensional standard, and project or OEM specification. Confirm facing, dimensions, gasket stress and service before selecting the construction; pressure class alone does not require a Spiral Wound Gasket.
Browse Metal GasketsPumps, Valves & Rotating Equipment
Pump mechanical seals, valve packing and rotating shaft seals need the exact fluid, temperature, pressure, motion, speed, solids and equipment geometry. Screen an elastomer compound or packing construction against those inputs and the OEM requirements.
Browse O-RingsUtilities & Boiler Rooms
Steam, condensate and thermal-oil lines have different media and coincident pressure-temperature conditions. For heat exchangers, also confirm the equipment drawing, partition layout, facing, cycling and available gasket stress before comparing exact CNAF, graphite or semi-metallic products.
Browse Flexible GraphiteCompressed Air Systems
Compressor flanges, aftercooler joints and receiver vessels can see oil carryover, condensate, heat and pressure cycling. Select the exact gasket or seal from the compressor fluid, additives, temperature, pressure, facing and OEM specification.
Browse Compression PackingCustom Cutting & Field Supply
Non-standard flanges and one-off replacements can start from a drawing or sample. Verify the material, service, thickness, finished dimensions and tolerances, and treat a worn sample as a reference rather than proof of the original profile.
Browse Industrial TapesStandards and Quality Records
These references cover flange or gasket dimensions, pressure-equipment design and in-service inspection. Check the governing equipment drawing, project specification and edition before ordering a replacement.
ASME B16.5 / B16.20 / B16.21
ASME B16.5-2025 covers flange Classes 150–1500 for NPS ½–24 and Class 2500 for NPS ½–12. B16.20-2023 and B16.21-2021 set requirements for the metallic and non-metallic gasket types they cover. Flange class is not a complete gasket selection.
AS 2129 + AS 4087
AS 2129-2000 includes flange tables found on installed Australian equipment. AS 4087:2011 incorporating Amd 2:2023 covers PN 14, PN 16, PN 21 and PN 35 waterworks flanges within its scope. Follow the actual equipment or project reference.
AS 1210 + AS 4041
AS 1210:2010 is a pressure-vessel design and construction standard; AS 4041:2006 covers pressure piping. They are not generic nozzle or gasket dimensional tables. Manufacture to the equipment drawing, applicable flange or gasket standard, and project specification.
AS/NZS 3788:2024
AS/NZS 3788:2024 incorporating Amd 1:2025 covers in-service inspection and fitness for service of pressure equipment. It does not independently set a gasket replacement interval; follow the competent person's maintenance plan, OEM requirements and site procedure.
DIN 2690 / EN 1514-1 / JIS B 2220
DIN 2690 is withdrawn and remains relevant only as a legacy dimensional reference on governing drawings. Use EN 1514-1:2024 for its current covered PN-gasket scope. JIS B 2220:2012, reconfirmed 2021, remains a current flange reference.
Quality and Order Documentation
ISO 9001 certifies a quality-management system only within the legal entity, site and scope stated on its current certificate; it is not product certification. Specify any source certificate, batch linkage or dimensional report in the order and confirm that the material and manufacturing route support it.
MRO Sealing FAQ
If the original gasket is unknown, stop and identify the duty before cutting a replacement. Confirm the medium and treatment chemicals, saturated or superheated steam, coincident pressure-temperature conditions, cycling, flange standard and facing, flange and bolting condition, available gasket stress, and any code or OEM requirement. A named CNAF product may be a candidate for suitable water, oil or steam duty only after its current product data are checked. See our Gasket Selection Guide for the required inputs.
A drawing, DXF or sample can support identification and manufacture. Photos are useful for triage, but a pressure-boundary replacement also needs verified dimensions, thickness, material and service data, tolerances, and allowance for wear or distortion. Timing depends on the material, size, profile, inspection and available capacity; confirm it when ordering.
Common references include AS 2129-2000, AS 4087:2011 incorporating Amd 2:2023, ASME B16.21-2021, EN 1514-1:2024, and JIS B 2220:2012 (reconfirmed 2021). DIN 2690 is withdrawn and applies only as a legacy dimensional reference where the governing equipment drawing or project specification invokes it.
Cord stock can be professionally joined into large static rings for suitable engineered duties. A spliced ring is not automatically equivalent to a moulded O-ring. Confirm the compound, duty, splice method, finished dimensions and inspection requirements; dynamic or safety-critical service needs an OEM-qualified moulded seal unless specifically engineered otherwise.
Turnaround depends on the material, thickness, dimensions, quantity, drawing quality, inspection requirements and current production capacity. Send the complete duty and drawing, then confirm availability and dispatch timing at quotation.
Old gaskets, photos and sketches are useful enquiry inputs, but recovered geometry does not prove the original material or design intent. Manufacture needs verified dimensions, thickness, tolerances, service data and approval of any allowance for wear or distortion.
Material Families for Initial Screening
Use these families only to start a discussion. Confirm the exact product or compound, thickness, medium, coincident pressure-temperature conditions, flange load and current manufacturer data.
Compressed Fibre (CNAF)
Named CNAF grades may suit selected water, oil or steam utility joints. Check binder, thickness, chemistry, coincident pressure-temperature conditions, cycling and flange load.
Insertion Rubber
Reinforced rubber sheets may suit selected low-pressure water or air duties. Confirm the exact reinforcement, elastomer compound, medium, temperature, pressure and flange design.
Neoprene
CR compounds may be candidates for weather-exposed equipment. Check the exact compound against ozone and UV exposure, process medium, temperature, compression and movement.
PTFE Joint Sealant
Expanded PTFE joint sealant may conform to minor, in-tolerance surface irregularities where the manufacturer and joint design permit. It is not a repair for cracked, corroded, warped or out-of-tolerance flanges.
Flexible Graphite
Flexible graphite can be considered for selected steam, exhaust or thermal-oil joints. Check the exact grade, reinforcement, atmosphere, pressure, temperature, duration and oxidation exposure.
Cork & Natural Fibre
Cork-rubber composites and natural-fibre sheets may match selected legacy covers and low-pressure joints when the exact grade, fluid, load and equipment drawing support them.
Speciality Grades
One-off MRO work may use packing, magnetic sheet or other speciality products. Confirm availability, properties, dimensions and suitability for the actual duty at quotation.
MRO Sealing Products
Browse flange gaskets, O-rings, joint sealant, packing, tapes and hardware, then confirm the exact product, duty and availability at quotation.
Soft-Cut Gaskets
CNAF, Rubber, PTFE, Graphite, and more
Non-metallic gaskets cut to your drawings in compressed fibre, rubber, PTFE, flexible graphite, and other sheet materials.
O-Rings & Cord
Standard & Custom Elastomer O-Rings and Cord Stock
O-rings and cord stock in Nitrile, Viton, EPDM, silicone, and speciality compounds. Standard metric and imperial sizes plus custom profiles and cut-to-length cord.
Joint Sealant
PTFE-Based Thread & Flange Sealant
Flexible PTFE-based joint sealant for minor, in-tolerance surface irregularities, pipe threads, and permitted non-standard connections; not a repair for damaged flanges.
Sealing & Insulation Tapes
PTFE, Insulation & Speciality Tapes
Thread seal tape, insulation tapes, high-temperature tapes, and speciality industrial tapes for sealing and wrapping applications.
Compression Packing
Braided Packing for Pumps & Valves
Braided packing in PTFE, graphite, aramid, and hybrid constructions for pumps, valves, and rotating equipment.
Adhesives & Sealants
Industrial Bonding & Sealing Compounds
Thread-locking compounds, liquid gasket makers, and industrial adhesives for flanges, fasteners, and in-service maintenance.
High Temperature PTFE Belts
PTFE Conveyor Belts & Process Tapes
High-temperature PTFE-coated belts and tapes for conveyor systems, heat sealing, and industrial process applications.
Studs, Bolts & Washers
High-Tensile Flange Fasteners
Stud bolts, hex bolts, washers, and nuts in carbon steel, stainless steel, and exotic alloys to ASTM and ISO standards.
Explore Further
Need a Replacement Gasket Identified?
Send the drawing or sample with the medium, pressure, temperature, thickness, flange details and required inspection. We will confirm the manufacturing inputs and timing at quotation.
- Drawing, DXF or dimensioned sample
- Material and service data
- Tolerance and inspection requirements
- Availability and timing 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.