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Email: dvorak@dvorakmachine.com

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Rear Main Seals

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DVORAK MACHINE continues to pave the way with new products for problem areas in today's high performance engines.

We've had a high performance "anti-leak" seal for years but now it gives us great pleasure to announce an anti-leak seal for less than ideal running conditions. Our seals are made from an ultra blend fluoroelastomer with
lubricity enhancers for high efficiency and low drag which provides extra protection against high temperatures, dusty conditions and dry running conditions.

A low drag sealing lip provides an effective seal for applications using dry sump oiling systems and HIGH VACUUM CRANKCASES. Our super seals are also a prime choice for a highly modified engine with WET SUMP oiling systems and POSITIVE CRANKCASE PRESSURES.

The sealing lip PARTING SURFACE has an EXTENDED LEAD to provide a positive seal between the two seal halves. The use of SEALERS or "OFFSETTING SEAL HALVES" is neither required or RECOMMENDED!

ASK FOR THE "RED SEAL"

MoPar

2 piece split 318-340 DVO23340
2 piece split 360 DVO23360
2 piece split 361-440 DVO23440

FoMoCo

2 piece split 289-302 DVO23289
2 piece split 351 CMW DVO23351
2 piece split 429-460 DVO23460

GM

2 piece split 305-350 DVO23350
2 piece split 396-454 DVO23454
2 piece split 3" BB AM DVO23600

OF COURSE OUR STANDARD DUTY REAR MAIN SEALS WITH THE ANTI-LEAK SIDE SEALS ARE STILL AVAILABLE FOR THE BIG BLOCK CHRYSLER UNDER P/N 23383

REAR MAIN SEAL KIT - Our Rear Main Seal Kit contains one set of crankshaft seals, one set of "New Design" side rail seals for the seals retainer, and easy to follow instructions for a professional quality installation.

Leak Proof Rear main SealThe "New Design" side rail seals have a hollow core to provide ease of compression during installation and sufficient memory load to "self tension" the block surface. The silicone based elastomer has high tensile strength additives for durability coupled with silicone's natural ability to swell when in contact with engine oil further enhance the effectiveness of the seal.

Quality does not stop with the parts listed above. We have included our OEM quality polyacrylate crankshaft seals. The polyacrylate is capable of withstanding temperatures of up to 395° F and fend off chemical attack due to oil additives and viscosity enhancers to provide a durable, long lasting seal. $9.95 / set

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