Double-Acting pneumatic cylinder hian seal chi hrang hrangah a innghat a, chu chuan hnathawh dan dik a tichiang a, boruak a chhuah loh nan leh hun kal zelah a thawh that theih nan a pui bawk. Double-acting pneumatic cylinder-a hman tlanglawn ber berte chu:
### 1. **Piston Seals**
- **Purpose**: Heng seal te hi piston vel ah an awm a, piston a kal laiin boruak a chhuah loh nan piston leh cylinder barrel inkar ah seal nghet tak a awm theih nan a enkawl a ni.
- **Types**:
- **o{{1}Rings**: Piston seal chi khat, a tlangpuiin rubber emaw elastomer emaw atanga siam nitrile, viton, emaw polyurethane emaw atanga siam a ni. O-Rings hian pressure siamin seal rintlak tak a pe a ni-tight barrier.
- **u-cup seals**: U-cups (or double{3} acting seals) te hi "U" ang maia siam an ni a, piston vel ah seal flexible, tight tak an pe a ni. Pressure hnuaia air leakage venna kawngah an tangkai hle a, higher-pressure application atan an hmang tlangpui bawk.
- **Wiper Seals**: Piston seal nena inzawm a hman fo thin, heng seal te hian rod atanga bawlhhlawh leh bawlhhlawh te an paih chhuak a, chu chuan cylinder chhunga bawlhhlawh lut tur a veng thei a ni.
### 2. **Rod seals**
- **Purpose**: Rod seals hian boruak emaw oil emaw chu piston rod kal pelh loh nan a veng a, cylinder chhunga pressure awm reng a, a hnathawh dan a awlsam theih nan a veng thei bawk.
- **Types**:
- **o{{1}Rings**: A awlsam leh a tangkai, O-ring rod seal hi pneumatic application tam takah chuan a awm fo thin.
- **V{{1}Ring Seals**: AV-Shaped seal chu rod tan tight seal pe thei tura siam a ni a, sealing performance tihchangtlun nan backup ring nen hman dun a ni fo.
- **polyurethane seals**: Heng seal te hi a chhe thei lo a, wear resistance tha zawk a pe a, hei hian high-speed application atan a tha hle.
- **Wiper Seals**: "Scraper" seal tia hriat bawk, hengte hi cylinder chhunga a luh leh chhuah laiin piston rod atanga bawlhhlawh emaw, bawlhhlawh emaw awm zawng zawng paih chhuah nan an hmang thin. Anni hian rod leh internal component dangte chu an chhe loh nan an pui thin.
### 3. **A tawp ber Cap Seals**
- **Purpose**: Heng seal te hi cylinder end caps ah te hman thin a ni a, chu chuan boruak a leak loh nan leh cylinder chhunga a chhunga pressure awm chu a awm reng theih nan a hmang thin.
- **Types**:
- **O{{1}Rings**: O-Rings hi end caps leh cylinder tube inkar connection te seal nan an hmang fo thin. An awlsam a, an man pawh a tlawm-effective.
- **flat seals**: Hengte hi rubber emaw metal ang chi thila siam a ni tlangpui a, end caps-a flush-a dah theih tura siam a ni a, tight seal a ni.
### 4. **Backup ring**
- **Purpose**: Backup ring te hi primary seal (O{{1}rings ang chi) te nen hman dun a ni a, chu chuan pressure sang tak hnuaia extrude emaw chhiat emaw a nih loh nan a veng thei a ni. Heng ring te hian thlawpna dang a pe a, seal dam chhung pawh a ti rei zawk bawk.
- **Materials**: Backup ring hi a tlangpuiin thil harsa zawk PTFE (Teflon) emaw thermoplastics emaw atanga siam a ni a, pressure sang tak tuar thei tur leh sealing strength extra pe thei tur a ni.
### 5. **Buffer seals**
- **Purpose**: Buffer seals hian shock a hip lut a, high-pressure spike te chu seal te a tihchhiat loh nan a pui a, a bik takin pressure inthlak fo thin emaw, rang taka pressure emaw hmannaah chuan.
- **Materials**: Hengte hi a tlangpuiin rubber emaw polyurethane emaw ang chi thil nem zawk hmanga siam an ni a, cushioning an pe thin.
### 6. **Rod scrapers**
- **Purpose**: Heng seal, rod wiper tia hriat bawk hi cylinder hawnna hmunah chuan a inzar pharh a, a hnukkir leh a, a zung (rod) atanga bawlhhlawh, bawlhhlawh, a nih loh leh tuihna te paih chhuah nan an dah a ni. Hei hian seal dangte integrity vawng reng turin a pui a ni.
- **Materials**: A tlangpuiin rubber, polyurethane, emaw special composite materials atanga siam a ni.
### 7. **Cushion seals**
- **Purpose**: Cylinder-ah hian cylinder-ah hian cushion seals hman a ni a, cylinder tawp a hnaih deuh deuh chuan stroke tawp lama a tlak leh ri tihtlem nan hman a ni. Heng seal te hi a bik takin high -speed movement nei tan chuan a tangkai hle.
- **Types**: Hengte hi end caps-ah te dah theih a ni a, elastomers emaw plastic emaw ang chi thil nem tak tak atanga siam a ni.
### Pneumatic cylinder seal siamna atana hman tur hmanrua te:
- **Nitrile (NBR)**: Oil, fuel, leh general wear a do theih avangin seal-te tan hman tlanglawn.
- **Viton (FKM)**: a high-temperature resistance leh chemical stability avanga hriat lar, demanding application-a hman fo thin.
- **Polyurethane (PU)**: Abrasion resistance tha tak a pe a, rod leh piston seal-ah te hman a ni.
- **EPDM**: Temperature sang lutuk leh ozone laka invenna mamawhna hmuna seal-te tan hman fo.
- **PTFE (Teflon)**: Backup ring-ah te leh a then chu piston seal-ah te hman a ni a, chu chu a friction a hniam a, chemical a do theihna a sang avangin a ni.
- **Silicone**: High-temperature resistance atana application thenkhatah hman a ni a, mahse pneumatic cylinder-ah chuan a tam lo hle.
### Khaihtawi
Double-acting pneumatic cylinder atana seal thlan dan hi pressure, temperature, speed, leh cylinder-a medium (air, oil, emaw tui) chi hrang hrang (air, oil, or water) chi hrang hrangah a innghat a ni. Piston seal, rod seal, leh backup ring te inzawmkhawm dik tak hmangin pneumatic cylinder te chu a thawk tha thei a, leakage tlemte chauh a awm a, service life rei zawk a awm thei a, enkawlna pawh a tlem thei bawk.
