Lubrication is an important, sometimes overlooked, component of sealing. Many applications require lubrication for installation to prevent seal damage and prevent injury during manual assembly. Internal lubricants reduce installation force and dynamic friction without the need for an external lubricant or coating. Internal lubrication also decreases break-out friction for dynamic applications. Operating seals with no lubrication can lead to heat buildup and accelerated wear that can result in leakage and shorten the seal’s life. Internally lubricated seal materials provide a clean alternative to grease or oil in an assembly operation.
This blog will discuss how they work and the benefits of internally lubricated o-rings.
components their machines need in order to operate and produce their desired end product. The ways that tooling impacts a manufacturing operation are imperative. Not only is the tooling of your own manufacturing important, but also of the tools themselves that will be a part of your own operation. It’s necessary to have components that have been tooled to specifications, have high quality, and will perform under stress.
The end result of your operation’s tooling is going to affect every aspect of the business and its success. If an operation has been improperly tooled, then it will inevitably have a less efficient running cost, slowing things down. When an improperly tooled machine fails, it can have disastrous consequences, not limited to time lost, loss of product, and potential hazard to employees or customers.
Sealing large joints or multiple grooves can pose cost and timing issues within product development. Extruded cord is often used to work within the program budgets and time constraints. However, that can create issues with splicing, RTV application, and inventory management.
To address these challenges, Parker has developed a new “Jigsaw” extruded seal design. The differentiating feature of this unique cross-section is the precise interlock when the cut-to-length seal ends are overlapped. When compressed, this patent pending interlock seals against itself and creates an RTV free joint.
Split Clipper® Oil Seals have the same superior characteristics as solid general purpose Clipper Oil Seals, but are factory-split at one place in the circumference. This permits installation over the side of a shaft, rather than over the end, and often can save dismantling the equipment in order to replace the existing rotary shaft seal.
Solid Clipper Oil Seals should be used whenever practical to provide maximum bearing protection in rotating shaft applications. However, installing a solid seal in a failed application can be costly and time consuming. In such cases, Split Clipper Oil Seals can be used to minimize unscheduled downtime, specifically where equipment cannot be uncoupled. These seals will provide long and efficient service until major or scheduled machine overhaul permits convenient installation of a regular non-split seal.
Split Clipper Oil Seals are available in Series R, RPD and RUP profiles, depending upon shaft diameter. RUP and RPD profiles are general purpose
What does a customer do when their application calls for enhanced performance that elastomers alone cannot offer? They turn to GFS partner, Parker Hannifin's uniquely formulated chemical bonding agents which enhance the performance of common elastomeric components by integrating them robustly with metal, thermoplastic, or other component substrates. Using world class process control during the elastomer’s vulcanization process, component substrates become integrally linked to the engineered elastomer, transforming them into a cohesive sealing system.
The need for easy-to-compress, low-closure-force seals is rapidly increasing in many commercial, electronic and communications applications. If you require efficient, reliable seals for light-weight enclosures with minimal bolts, fasteners or latches in combination with thin sheet metal or plastic flanges, consider low closure force (LCF) seals. LCF seals can drastically reduce the amount of closure force (compression) and the resulting stress generated on the sealed components. These hollow cross-sectional seals offer the seal designer and user a low-closure-force sealing solution for many applications. They can be supplied as either:
To date, the most common method for reducing closure force has been to reduce the Shore hardness of the elastomeric seal material or change to a foam-type of material.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Blog.
Sealing decisions are often left until the end of product development. By the time an email is sent to Gallagher Fluid Seals, the gland may already be fixed. This may not pose a problem in many applications, but it can often leave the seal engineer with few options. Having input from the seal expert in the early stages will allow for greater flexibility in choosing a seal and better chances at optimal sealing.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Blog.
(1) Ease of component assembly (2) Serviceability (3) Transit Issues
For example, seal retention is important when you have complex groove paths where your groove wanders around bolts or ports. It is also valuable in improving operator ergonomics by reducing installation strain or fatigue in high volume applications. Additionally, seal retention improves serviceability by eliminating the need for liquid sealants which can be difficult to clean. Last but not least, seal retention
In the Oil & Gas industry, the need for elastomers to seal higher pressures for sustained periods of time with minimal damage is abounding. Applications such as drilling tools, completions equipment, blow out preventers, and subsea pressure control systems now routinely require or exceed 15,000 psi with both liquid and gas media for functional testing and qualification. Parker meets this challenge, providing a best-in-class extrusion and rapid gas decompression resistant hydrogenated nitrile (HNBR) compound called KB292.
One of the most common failure modes for seals utilized in high pressure applications is known as extrusion or nibbling. This failure method emerges when the seal material is forced into a clearance gap that is present between the mating substrates and gradually can be cut, nicked, or chewed away.
Have you been frustrated with going through multiple design iterations when rubber components are failing due to high stresses or your device has been leaking due to insufficient compression? Have you lost months and months of precious time having to recut tools and make design changes?
Finite element analysis, also known as FEA, is an effective tool used in design iterations. It allows for different design ideas, options, and alterations to be quickly, effectively, and precisely compared.
Using FEA can improve both the speed and quality of product design as well as reduce the overall cost. Rubber parts, such as silicone diaphragms, septums, seals, valves, tubing, and balloons are critical components in today’s medical devices that can benefit from the use of FEA.