ซีลรูปถ้วย Cup Seals

ซีลรูปถ้วย Cup Seals

รูปที่ A.21 แสดงรูปแบบซีลถ้วยพื้นฐาน ซีลดังกล่าวทำหน้าที่ซีลในทิศทางเดียวที่ความดันเพิ่มแรงซีล ซีลถ้วยนี้ต้องใช้แผ่นรองเพื่อรักษาตำแหน่งและใช้สำหรับแรงดันสูงถึง 70 บาร์ (1,000 psi)

Fig. A.21 - Cup Seals (ภาพจาก MFP Seals)

ซีลถ้วยรูปตัวยู (U- Cup Seals) 

รูปที่ A.22 แสดงให้เห็นถึงการซีลของ  ซีลถ้วยรูปตัวยูแบบไม่สมมาตร ซีลถ้วยรูปตัวยูเป็นที่นิยมมากในกระบอกสูบอุตสาหกรรมและสามารถใช้เป็นซีลลูกสูบหรือก้าน เมื่อใช้กับวงแหวนรอง ความดันของระบบไม่ควรเกิน 173 บาร์ (2,500 psi)

รูป. A.22 – ซีลถ้วยรูปตัวยู (ขอบคุณภาพ MFP Seals)

รูปที่ 26 แสดงการติดตั้งของซีลยูคัพ ดังที่แสดง

Hallite 155 for Bore Sealing Applications

The Hallite 155 U-ring static seal designed to seal the joint between the gland and the cylinder bore. The Hallite 155 replaces the conventional O-ring and back-up ring combination.

Through its special design and polyester material compound, the seal will work with a maximum extrusion gap of 0.40 mm at 500 bar pressure.

Every nominal diameter of the Hallite 155 is suitable for a range of bore diameters, ØD₁. See part number range for details.

This seal was developed for water-based, HFA, applications, but can also be used with standard mineral oil fluids.

Hallite 862 WIPER

DESIGN
The Hallite 862 single-lipped, metal-cased wiper is designed to press fit into open groove housings for a wide range of applications. The precision trimmed polyurethane wiping element is securely bonded to a metal case treated to inhibit rust. The proportions of the polyurethane wiping lip follow the side movement of the rod to clear away heavily deposited dirt and make this wiper an excellent choice for dirty conditions. The Hallite 862 is offered in a range of sizes suitable for standard American inch wiper housings.

521 WIPER Single-Lipped Designed for AN Style Housings

521 WIPER Single-Lipped Designed for AN Style Housings

DESIGN
The Hallite 521 snap-in rod wiper is designed for light-duty applications and to fit typical AN housings. The proportions of the wiping lip ensure that contact is maintained with the surface of the rod to remove contaminants. The Hallite 521 is available in wide range of Hythane® polyurethanes and polyester materials to best suit your application needs.

Hallite 860 WIPER Single-Lipped Polyurethane, Metal-Cased

DESIGN
The Hallite 860 single-lipped, metal-cased wiper is designed to press fit into open groove housings for a wide range of applications. The precision trimmed polyurethane wiping element is securely bonded to a metal case treated to inhibit rust. The proportions of the polyurethane wiping lip follow the side movement of the rod to clear away heavily deposited dirt and make this wiper an excellent choice for dirty conditions. The Hallite 860 is offered in a range of sizes suitable for ISO 6195 Type B housings and also for standard Asian housings.

Hallite 831 WIPER Single-Lipped Polyurethane Designed for Metric Housings

DESIGN

The Hallite 831 single lipped, snap-in rod wiper is designed to fit metric housings and is interchangeable with many common European wiper styles. The proportions of the wiping lip ensure that contact is maintained with the surface of the rod to
remove all deposits of mud and other forms of contamination except for those found in heavy-duty industrial applications. The outside diameter of the seal incorporates a crush lip to provide interference fit with the housing and a face bead to ensure that the crush lip is not trapped in the corner of the housing. These features help prevent contaminant from entering the groove. The moulded ribs on the internal diameter provide extra stability to the wiper and help prevent the possibility of blow-out due to pressure trapping between the wiper and the main rod seal. The Hallite 831 is moulded in polyurethane for maximum wear resistance and performance.

Hallite 842 WIPER

DESIGN
The Hallite 842 single-lipped, snap-in rod wiper is developed specifically for use in harsher environments with heavy contamination, such as in agriculture, offhighway, forestry, and long wall mining equipment. The unique feature of the Hallite 842 is the Umbrella Wiper Technology™, which is a protective debris guard flap on the wiping lip that entirely covers the gland housing and prevents the water/slurry trap that is common with conventional wipers. This feature offers added protection to the integrity of the hydraulic system, providing increased system life by reducing corrosion and preventing the ingress of contamination into the wiper housing groove and hydraulic cylinder gland. The moulded ribs on the internal diameter provide extra stability to the wiper and help prevent the possibility of blow-out due to pressure trapping between the wiper and the main rod seal. The standard Hallite 842 is moulded in Hythane® 181, Hallite’s high-performance
polyurethane, for easy installation and excellent low temperature performance. A number of sizes, indicated by “*”, do not have an interference fit between the outside diameter of the wiper and the wiper housing bore ØD₁. They float on the retaining lip.

Hallite 834 WIPER

DESIGN
The Hallite 834 single lipped, snap-in rod wiper is designed to fit standard housing,including many ISO 6195E sizes. The proportions of the wiping lip ensure that contact is maintained with the surface of the rod to remove all deposits of mud and other forms of contamination except for those found in heavy industrial applications. The moulded ribs on the internal diameter provide extra stability to the wiper and help prevent the possibility of blow-out due to pressure trapping between the
wiper and the main rod seal. The Hallite 834 is precision moulded in Hythane® 181 for maximum wear resistance. For better dry rod performance and protection against moisture ingress, the Hallite technical team may advise you to use a Hallite 846 wiper instead of the Hallite 834.

Hallite 33

Design
The Hallite 33 wiper has a lip designed to remove lightly adhered dirt from the rod i.e. mud, dust or moisture. The wiper is manufactured from a hard nitrile rubber suitable for installing in a grooved housing. Rod diameters (Ød1) of 20mm and below require a two piece housing .To prevent dirt passing the outside of the wiper and to reduce the pumping action, the outside diameter is an interference fit with the housing. Certain sizes of the standard Hallite 33 metric range are suitable for ISO 6195 Housing Type A. It should also be noted that the Hallite 33 inch profile differs from the metric profile. NB: Part numbers suffixed by “‡” indicate housing sizes to meet ISO6195A. Many of the metric sizes are also available as  polyester wipers – see Hallite 38.

Hallite 520 single lipped

The Hallite 520 single-lipped, snap-in rod wiper is designed to fit North American D-style housings. The proportions of the wiping lip ensure that contact is maintained with the surface of the rod to remove heavily deposited containments such as mud and ice.