TECHNICAL SCHEMATIC / 结构示意图 — 本条为目录条目，尚无经核验的实拍图。该图按类别原创绘制，仅示意结构，非产品照片、不作为验收依据；实拍图与尺寸图随报价单提供 [待补实拍]。
Seals, Mechanical Seals & Packing · 密封与填料HS 8484.90 / 5911.90SKU YB-IND-009RFQ · 询价条目
Gland Packing / Compression Packing (盘根填料)
Braided square-section packing compressed in a stuffing box to seal a rotating or reciprocating shaft — still the default on many older pumps and valves.
价格、起订量、交期与关税 / Commercial terms
Price on request（按询价确认）· MOQ by RFQ · Lead time confirmed per order · Pakistan duty per current 8-digit PCT [待核验]。
本页不发布未经确认的 FOB 价格、MOQ 数字、库存状态或税率；一切以正式报价单 / PI 为准。
Price on request（按询价确认）· MOQ by RFQ · Lead time confirmed per order · Pakistan duty per current 8-digit PCT [待核验]。
本页不发布未经确认的 FOB 价格、MOQ 数字、库存状态或税率；一切以正式报价单 / PI 为准。
资料口径：本条规格为公开标准型号的工程参数；产地为公开产业集群信息（典型供货产业带），实际厂家、原产地证与材质证明以报价单为准 [待确认]。本页不声称任何进口排名、需求热度、市场份额或库存。
At a glance · 快速对照
简要用途 / Brief useBraided square-section packing compressed in a stuffing box to seal a rotating or reciprocating shaft — still the default on many older pumps and valves.
典型应用场景 / Typical applicationsOlder centrifugal pumps · Valve stem sealing · Mixers & agitators · Marine & boiler feed equipment
供应与产地 / Typical sourcing base典型供货产业带：浙江宁波、江苏常州、河北景县（橡塑密封产业带）。该产业带为公开产业集群信息；实际供货厂、产地与原产地证以报价单为准 [待确认]。
HS 归类 / Classification8484.90 / 5911.90（国际 HS 6 位品目）；巴基斯坦 8 位 PCT 子目与当期税率由清关代理确认 [待核验]。
可筛选标签 / Filter tags
Key specifications · 关键规格参数
| Parameter | Specification |
|---|---|
| Construction | Braided square section, lattice / interlock braid |
| Section size | 4 / 5 / 6 / 8 / 10 / 12 / 16 mm square |
| Materials | PTFE / graphite / aramid / ramie / carbon fibre |
| Lubricant | PTFE dispersion, graphite or oil impregnation per grade |
| Temperature | Per grade datasheet (PTFE vs. graphite differ substantially) |
| Supply form | Coil per kg or cut rings to stuffing-box drawing |
| Application | Rotary pump shafts, valve stems, reciprocating rods |
上表为标准型号 / 通用工程参数，用于选型比对；实际供货型号、公差、材质与等级以厂家数据表（datasheet）及正式 PI 为准 [待确认]。
Product detail · 详情说明
Packing is a deliberately retained niche line: thousands of installed pumps still use a stuffing box and cannot be converted to a mechanical seal without machining. Correct section size and grade decide whether the box runs cool or scores the shaft.
Give the shaft diameter, stuffing-box bore and depth, and the fluid. From the difference between bore and shaft we derive the square section size, then select a grade for the temperature and media. Pre-cut rings are supplied on request.
选型与验收要点 / Selection & acceptance points
- Section size derived from stuffing-box dimensions, not guessed
- PTFE / graphite / aramid grades for different media
- Cut rings available against a drawing
- Retained specifically for legacy equipment that cannot take a mechanical seal
Applications · 典型应用场景
Older centrifugal pumpsValve stem sealingMixers & agitatorsMarine & boiler feed equipment
Supply, origin & documents · 供应产地与单据
典型供货产业带 / Typical sourcing base典型供货产业带：浙江宁波、江苏常州、河北景县（橡塑密封产业带）。该产业带为公开产业集群信息；实际供货厂、产地与原产地证以报价单为准 [待确认]。
包装与装箱 / Packing
- 按型号与订单量确定，装箱单于出运前确认 / Confirmed on the packing list before shipment
可提供的文件 / Documents available on request
- 厂家数据表 (factory datasheet) on request
- 材质 / 检测证明 (material & test certificate) on request
- 商业发票、装箱单、提单 / 空运单、原产地证、HS 编码技术数据表（每单随附）。
Data basis & open items · 资料口径与待确认项
为什么纳入这个品类 / Why this category is listed
Sealing parts follow the HS 84 pump / rotating-equipment base. These are long-tail, specification-driven lines with no published SKU-level import ranking. 选入依据为品类覆盖，非进口量排名 [待核验]。
Sealing parts follow the HS 84 pump / rotating-equipment base. These are long-tail, specification-driven lines with no published SKU-level import ranking. 选入依据为品类覆盖，非进口量排名 [待核验]。
口径说明 / Scope: The figures above are HS 2-digit chapter totals or a national commodity group from official / intergovernmental trade statistics. They identify which industrial chapters are large in Pakistan's import basket; they do NOT give an import ranking, demand volume, market share or growth rate for any individual part listed on this page. UN Comtrade (calendar-year goods basis, US$56.5B) and PBS (fiscal-year basis, US$54.779B) use different scopes and must not be compared directly. 任何单品的进口排名、需求热度与精确数值均 [待核验]，需以 HS 8 位清关数据 / 采购记录为准。
本条明确待确认 / Explicitly open items
- 价格、数量阶梯、MOQ、交期与付款条件 → 以正式报价单 / PI 为准 [待业务确认]。
- 巴基斯坦 8 位 PCT 子目、当期关税与销售税 → 由清关代理按进口当日税则核验 [待核验]。
- 实际生产厂、品牌、原产地与材质 / 检测证明 → 以报价单和原产地证为准 [待确认]。
- 产品实拍图、尺寸图与批次检测报告 → 随询价提供 [待补实拍]。
- 单品进口排名、需求热度、市场份额与任何精确数值 → 本页不作声称 [待核验]。
Frequently Asked Questions
Send the part number, a photo of the nameplate / old part, or the machine model and required dimension. We reply with the applicable standard designation and a factory datasheet; the final specification is fixed on the proforma invoice.
Commercial invoice, packing list, certificate of origin, bill of lading or AWB, and an HS-coded technical datasheet. The HS 6-digit heading shown on this page is the international classification; your clearing agent confirms the Pakistan 8-digit PCT subheading and the duty rate applicable on the date of import.
No. The location named under 'Typical sourcing base' is a publicly known industrial cluster, given to help you understand the supply chain. The actual factory, country of origin and any mill / test certificate are confirmed in writing on the quotation and the certificate of origin. Treat it as [待确认] until then.
Not answered here?Ask the sales engineer for a datasheet, dimensional drawing, cross-reference or a mixed RFQ covering several lines.
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