Aftermarket

Serving the aftermarket

The World's Largest Offering.

Our range of applications for the engine aftermarket is the broadest offered in the industry. We have piston rings for virtually every engine type—car, truck, motorcycle, lawn and garden, compressor, marine, agriculture, and racing.

When it comes to piston rings, many of the world’s most recognizable and trusted brands come to us, including Chrysler, General Motors, Harley-Davidson, Ingersoll-Rand, Emerson, MTD, and many other Tier One manufacturers. But we’re trusted for more than our product offering. The difference is also in our innovative designs, responsive service, competitive prices, high order-fill rate, and on-time delivery.

Popular Piston Ring Profiles.

TOP COMPRESSION RING TYPES
Rectangular

Rectangular type has no ID bevel. Sometimes seen in internal combustion engines, it is widely used in compressors and pumps.

TOP COMPRESSION RING TYPES
Barrel Face
This common top ring profile has a convex face, enabling a higher ring face contact pressure, and can be symmetric or asymmetric. This profile results in improved combustion gas sealing and improved oil control versus a straight-faced ring. Coatings include: Plasma Moly, Hard Chrome, Ceramic Chrome, Diamond Chrome, Gas Nitrided, and CrN PVD.
TOP COMPRESSION RING TYPES
Torsional

This ring type is trusted for increased gas side sealing and better oil control. It may have barrel or straight face. 

TOP COMPRESSION RING TYPES
Full/Half Keystone

Primarily used in diesel applications, the Full/Half Keystone type prevents carbon build up and ring sticking. It also creates additional surface area for side load bearing. Coatings include: Plasma Moly, Hard Chrome, Ceramic Chrome, Diamond Chrome, Gas Nitrided, and CrN PVD.

Second Compression Rings
Torsional

This twist ring creates an OD bottom side scraping edge that helps wipe oil off the cylinder wall and into the crankcase. Its sharp edge contact helps speed break-in.

Second Compression Rings
Reverse Torsional Taper Face

This reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring. Reverse twist promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy—a very common second ring profile in modern gas engines.

Second Compression Rings
Wiper Napier

This reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring. Reverse twist promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy—a very common second ring profile in modern gas engines.

Oil Control Rings
Three Piece Flex Vent

The Flex-Vent oil ring is the benchmark for oil control ring price/performance. Its three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore – even with today’s low-tension, low-friction designs.

Oil Control Rings
Two Piece Coil Spring

Although this design is not as conformable to the cylinder wall as three-piece designs, its rigid cast iron or steel body provides the durable axial structure required to function long term in compression fired diesel engines.

Oil Control Rings
Two Piece Inner Spring

Two-piece spring designs are made for improved tension and better conformability. However, it will not unitize in specific engine design applications or in applications that require severe extended running times. Used in some diesel engines, vintage applications, and compressors, this style is available chrome-plated for long service life.

Oil Control Rings
One Piece

The one-piece design makes for ease of installation and simplicity. It’s available chrome-plated for long service life. The style is used in some diesel engines, vintage applications, and compressors.

Popular Piston Ring Profiles

Top Compression Rings

TOP COMPRESSION RING TYPES
Rectangular

Rectangular type has no ID bevel. Sometimes seen in internal combustion engines, it is widely used in compressors and pumps.

TOP COMPRESSION RING TYPES
Barrel Face

This common top ring profile has a convex face, enabling a higher ring face contact pressure, and can be symmetric or asymmetric. This profile results in improved combustion gas sealing and improved oil control versus a straight-faced ring. Coatings include: Plasma Moly, Hard Chrome, Ceramic Chrome, Diamond Chrome, Gas Nitrided, and CrN PVD.

TOP COMPRESSION RING TYPES
Torsional

This ring type is trusted for increased gas side sealing and better oil control. It may have barrel or straight face.

TOP COMPRESSION RING TYPES
Full/Half Keystone
Primarily used in diesel applications, the Full/Half Keystone type prevents carbon build up and ring sticking. It also creates additional surface area for side load bearing. Coatings include: Plasma Moly, Hard Chrome, Ceramic Chrome, Diamond Chromne, Gas Nitrided, and CrN PVD.

Popular Piston Ring Profiles

Second Compression Rings

Second Compression Rings
Torsional

This twist ring creates an OD bottom side scraping edge that helps wipe oil off the cylinder wall and into the crankcase. Its sharp edge contact helps speed break-in.

Second Compression Rings
Reverse Torsional Taper Face

This reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring. Reverse twist promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy—a very common second ring profile in modern gas engines.

Second Compression Rings
Wiper Napier

This reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring. Reverse twist promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy—a very common second ring profile in modern gas engines.

Popular Piston Ring Profiles

Oil Control Rings

Oil Control Rings
Three Piece Flex Vent

The Flex-Vent oil ring is the benchmark for oil control ring price/performance. Its three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore – even with today’s low-tension, low-friction designs.

Oil Control Rings
Two Piece Coil Spring

Although this design is not as conformable to the cylinder wall as three-piece designs, its rigid cast iron or steel body provides the durable axial structure required to function long term in compression fired diesel engines.

Oil Control Rings
Two Piece Inner Spring

Two-piece spring designs are made for improved tension and better conformability. However, it will not unitize in specific engine design applications or in applications that require severe extended running times. Used in some diesel engines, vintage applications, and compressors, this style is available chrome-plated for long service life.

Oil Control Rings
One Piece

The one-piece design makes for ease of installation and simplicity. It’s available chrome-plated for long service life. The style is used in some diesel engines, vintage applications, and compressors.

The premier choice

PISTON AND RING KITS

Rebuild your diesel with Hastings piston and ring kits. You put great demands on your engine’s piston and rings to handle extreme pressures. Hastings piston kits provide your engine with a reliable OE fit and performance, backed by 100 years of innovation. Kits include cast aluminum pistons, wrist pins, and rings.