Products/Services for Landolt Ring
O-rings - (760 companies)
Slip Rings - (96 companies)
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Piston Rings - (112 companies)
Hoist Rings - (111 companies)
Metal Ring Seals - (82 companies)
Ring Gages - (129 companies)
Solid Elastomeric Rings - (110 companies)...on the material that is being used in the rubber rings, the right sealing ring needs to be selected for the dimensions of the two surfaces, and the amount of pressure that is going to be applied. Some of the different rubber ring seals that are available... Learn More
V-ring Seals - (34 companies)
Retaining Rings and Snap Rings - (276 companies)
Product News for Landolt Ring
Precision Associates Incorporated
X-ring Seals Run Circles Around O-rings! What Makes X-Ring Seals Better?. Twice the Sealing Surface — Multi-lobed design provides more sealing surfaces than standard O-Rings. . Prolonged Seal Life – With multiple seal points, less squeeze is required to provide an effective seal. Less friction and wear will increase seal life and lower maintenance costs. . Prevents Spiral Failure – The “X ” profile creates a stable seal that is more resistant to rolling in the groove than an O-Ring when used... (read more)
Rings Rings. MWI divisions utilize both coiling and stamping processes to manufacture rings with diameters up to 40 inches. Coiled rings can be produced from round or shaped wire. Our in-house wire shape rolling and ring grinding capabilities enable us to provide close tolerance rings while minimizing raw material lead-time. Our proprietary shot peening process for light rings has improved the fatigue life of or rings many times over, enabling some of our customers to improve product life without... (read more)
MP Metal Products
Rings RINGS are rolled and bent into circular patterns from angles, channels and special shapes. They often are used to join or seal two other parts, such as drums and lids. Holes and notches may be incorporated. Rings may be rolled from a variety of materials including aluminum, cold rolled steel and stainless. (read more)Browse Roll Forming Services Datasheets for MP Metal Products
Allied Metrics Seals & Fasteners, Inc.
Quad-Rings / Square Rings X-Rings, also known as Quad-Rings®, can be used in a wide variety of static and dynamic sealing applications. The four-lobed design provides twice the sealing surface in comparison to a standard o-ring. The double-seal action requires less squeeze to maintain an effective seal. This reduction in squeeze means less friction and improved seal life. X-Ring parting lines are between the lobes, away from the sealing surface, thus eliminating the problems of leakage often resulting from a parting... (read more)
Smalley Steel Ring Company
Snap Rings Another popular choice of retaining ring configurations is the well known Snap Ring. Produced by edgewinding with no special tooling charges, snap rings have been specified for many years in the automotive and heavy equipment industries as a standard choice of engineers. Smalley has hundreds of standard snap rings in stock. Smalley standard snap rings, series FH/FS and FHE/FSE are available from stock in both carbon and 302 stainless steel. These series are manufactured in both English... (read more)Browse Retaining Rings and Snap Rings Datasheets for Smalley Steel Ring Company
KC Seals, Inc.
O-Rings Our styles range from O-Ring, Square cut to quad rings, we carry all these styles in different durometers as well as in many different materials ranging from: Viton ® Fluoroelastomer. Nitrile. HNBR. Simriz ® Perfluoelastomer. Teflon ®. and many more (read more)Browse O-rings Datasheets for KC Seals, Inc.
Quad-Rings a Quad-Ring® seal uses a narrower groove than a comparable O-Ring seal. Longer Seal Life. Because less squeeze means less friction with the four-lobe design, seals last longer. This means equipment in which the Quad-Ring® seal is installed will operate longer and require less maintenance. No Parting Line on Sealing Surface. Unlike O-Rings, where partitioning lines are on the sealing surface, Quad-Rings® seal's parting lines lie between the lobes, away from the sealing surface. This design... (read more)Browse O-rings Datasheets for Daemar Inc.
United Equipment Accessories, Inc.
Slip Rings UEA slip rings offer design versatility as component kit rings or as completed, ready-to-mount assemblies with an optional pre-wired harnesses. A wide selection of circuitry is available with many combinations of amperage and voltage (AC or DC). The compact design is made possible by brushes stacked on alternating sides. UEA slip rings come in a variety of bore sizes, from .500" to 14.00". Every order is custom designed for your specific motion application need. Our engineers work with you... (read more)Browse Slip Rings Datasheets for United Equipment Accessories, Inc.
Atlantic Rubber Company, Inc.
O-Rings Atlantic Rubber O-Rings, in a full range of sizes and materials, are available in small or large quantities using stock tooling or with minimal tooling costs. Our Molded O-Rings are designed using carefully compounded rubber and manufactured to RMA Class A high precision tolerances. Atlantic Rubber Custom O-Rings are cut to any length and vulcanized to provide a strong, uniform thickness and durable joint. Heavy duty static applications have used O-Rings of this construction type successfully... (read more)Browse O-rings Datasheets for Atlantic Rubber Company, Inc.
Smalley Steel Ring Company
Custom Retaining Rings and Snap Rings Smalley manufactures custom retaining rings to meet specific application requirements. Spirolox ® Retaining Rings have No Ears To Interfere with mating components in an assembly and are compatible with standard snap ring grooves. Smalley's manufacturing process allows for special designs to be produced with No-Tooling-Charges ™. Specials are available from .200" to 120" diameters; carbon steel, stainless steel and exotic alloys are readily available for production. The flexibility... (read more)Browse Retaining Rings and Snap Rings Datasheets for Smalley Steel Ring Company
Engineering Web Search: Landolt Ring
Experimental Study on Distances of Objects Seen on Flat Panel...
Referring to the accomplishment of the electronic Landolt's ring test, a test was carried out to check if we could perceive the pseudo-stereoscopic
The Development of a Precision Series of Landolt Ring Acuity...
The Development of a Precision Series of Landolt Ring Acuity Slides
See Storming Media LLC Information
ISO 8596:2009 - Ophthalmic optics -- Visual acuity testing...
ISO 8596:2009 specifies a range of Landolt ring optotypes and describes a method for measuring distance visual acuity under daylight conditions for
See International Organization for Standardization (ISO) Profile & Catalog
Vacuum - Wikipedia, the free encyclopedia
The video of an experiment showing vacuum fluctuations (in the red ring) amplified by spontaneous parametric down-conversion.
Landolt-Börnstein Online Search
Landolt-Börnstein Citations: Advanced Materials and Technologies
Radiation Safety Considerations for CANDLE Light Source
current electron 1.2.1 Normal operation mode beam in the CANDLE storage ring, are studied.
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