Kaxite Seals manufactures automotive exhaust spiral wound gaskets for Continental and Lycoming engine applications. These gaskets are produced with a spirally wound stainless steel strip and a graphite or non-asbestos filler, then finished with an outer ring for compression control. The result is a high-recovery, heat-resistant exhaust seal that maintains bolt load under thermal cycling, vibration, and repeated expansion and contraction of the exhaust system.
Exhaust manifold gaskets operate in one of the most demanding positions on an engine. Surface temperatures can exceed 600 °C, flanges are often uneven after years of service, and fasteners are subject to vibration loosening. A spiral wound construction is chosen for these conditions because the alternating metal and filler layers provide elastic recovery that a flat fibre gasket cannot match. The metallic winding resists blow-out, while the filler seals against combustion gases and condensate.
The following exhaust spiral wound gaskets are available as standard production items. Each model is identified by hole count and engine family, which allows maintenance teams and parts distributors to match the correct gasket without measuring the flange.
KXT600-EX-2 is a spiral wound exhaust gasket with two bolt holes, designed for Continental engine exhaust systems. The two-hole configuration matches the corresponding manifold flange and provides even compression around both ports. It is suitable for replacement and overhaul work where the original flange geometry is retained.
KXT600-EX-3 is a spiral wound exhaust gasket with three bolt holes, produced for Lycoming engine exhaust applications. The three-hole pattern is specific to certain Lycoming manifold flanges and must not be interchanged with two-hole or four-hole gaskets, because bolt spacing and port alignment differ.
KXT600-EX-4 is a spiral wound exhaust gasket with four bolt holes, manufactured for Continental engine exhaust flanges that use a four-bolt pattern. The additional fasteners distribute clamping load more evenly across the gasket face, which is beneficial on longer or wider flanges.
Exhaust flanges move. During warm-up and cool-down, the manifold and exhaust pipe expand and contract at different rates, and the gasket must follow that movement without losing contact pressure. A spiral wound gasket behaves like a spring: when the flange gap opens, the winding expands; when it closes, the winding compresses. This elastic recovery is the main reason Automotive Exhaust Spiral Wound Gaskets outperform flat gaskets in exhaust service.
Additional advantages include:
Kaxite Seals produces exhaust spiral wound gaskets under an ISO 9001 quality system. Material certificates for the stainless steel winding and filler are available on request. Each production batch is traceable to raw material lot number, which supports aviation and industrial maintenance records where traceability is required.
The hole count refers to the number of bolt holes in the gasket, which must match the bolt pattern of the exhaust manifold flange. KXT600-EX-2 has two holes for Continental engines, KXT600-EX-3 has three holes for Lycoming engines, and KXT600-EX-4 has four holes for Continental engines. Using the wrong hole count will cause misalignment and leakage.
No. Spiral wound gaskets are designed for single installation. Once compressed and heat-cycled, the winding and filler take a permanent set, and reusing the gasket may cause leakage. Always install a new gasket when the exhaust joint is opened.
The stainless steel winding withstands exhaust gas temperatures well above 600 °C. The practical limit is usually set by the filler and the flange material. Graphite filler is suitable for continuous service up to approximately 450–500 °C in oxidizing atmospheres, and higher in reducing conditions. Confirm the exact limit for your engine with Kaxite Seals.
Yes. Kaxite Seals produces custom spiral wound gaskets to drawing or sample, including non-standard hole patterns, oval and rectangular shapes, and special materials. Send the flange drawing or a sample and the required quantity for a quotation.
Send your engine model, hole pattern, and quantity to Kaxite Seals. Our engineers will confirm the correct gasket, provide material documentation, and quote production and delivery. Send an inquiry or contact us for more information.
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